Free Printable Science

1.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

2.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

3.

Atoms of elements that are in the same group have the same number of

a)

protons.

b)

neutrons.

c)

valence electrons.

d)

protons and neutrons.

4.

Elements in an elemental family have similar

a)

atomic symbols.

b)

atomic sizes.

c)

atomic weights.

d)

chemical properties.

5.

Which of the following particle pairs has approximately the same mass?

a)

protons and neutrons

b)

protons and electrons

c)

neutrons and electrons

d)

protons, neutrons and electrons

6.

A carbon isotope consists of 6 protons, 6 electrons and 8 neutrons. What is the mass number for this isotope?

a)

12

b)

14

c)

6

d)

8

7.

Isotopes of the same element have the same number of

a)

protons

b)

neutrons

c)

electrons

d)

not enough information

8.

An atom is electrically neutral when

a)

protons and neutrons are the same

b)

protons and electrons are the same

c)

neutrons and electrons are the same

d)

neutrons balance the protons and electrons

9.

Where does fusion occur naturally?

a)

Underwater

b)

All around us

c)

In the radioactive waste

d)

On the sun

10.

The splitting of a nucleus into smaller nuclei is

a)

fusion

b)

fission

c)

decay

d)

gamma radiation

11.

Weight is measured in ____ and is a _____

a)

Newtons, Force

b)

Kg, Force

c)

Newtons, Mass

d)

Kg, Mass

12.

The four fundamental forces of nature are:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Gravity, Strong Nuclear, Weak Nuclear, Medium Nuclear

c)

Normal Force, Force due to gravity, Magnetism, Nuclear

d)

Nuclear, Electricity, Gravity, Atomic

13.

Rank the four fundamental forces of nature in order from weakest to strongest:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Weak Nuclear, Gravity, Electromagnetism, Strong Nuclear

c)

Gravity, Weak Nuclear, Electromagnetism, Strong Nuclear

d)

Weak Nuclear, Electromagnetism, Gravity, Strong Nuclear

14.

Gravity is due to:

a)

the pull between Earth and the moon.

b)

the pull between the Sun and Earth.

c)

the pull between any objects with mass.

d)

the pull between atomic nuclei.

15.

________ can be either a force of attraction or repulsion while ____________ is only a force of attraction.

a)

Gravity; Electromagnetism

b)

Electromagnetism; Gravity

c)

Gravity; Strong nuclear force

d)

Magnetism; Electricity

16.

____________ and ____________ are short range forces.

a)

Gravity, Electromagnetism

b)

Strong Nuclear, Weak Nuclear

c)

Electromagnetism, Strong Nuclear

d)

Gravity, Weak Nuclear

17.

Gravity has a range that is ____________.

a)

Short

b)

Long

c)

Infinite

d)

Variable

18.

Which is a factor that affects the strength of gravitational, magnetic, and electrostatic force fields?

a)

Mass

b)

Volume

c)

Distance

d)

Density

19.

When dry ice (solid carbon dioxide) sublimes it goes directly from a solid to a gas. What type of change is occurring?

a)

Chemical change

b)

Physical change

c)

None of the above

20.

How many oxygen atoms are present in the following?
4Ca(OH)₂

a)

4

b)

6

c)

8

d)

1

21.

Fill in the blank to balance the chemical equation.
2KI + ____Cl₂→ 2KCl + I₂

a)

1

b)

2

c)

3

d)

4

22.

What coefficient should go in the blank space to balance the chemical equation?
2Al +____ HCl → 2AlCl₃ + 3H2

a)

2

b)

4

c)

3

d)

6

23.

Identify the Reactants in this equation.

a)

A

b)

B

24.

Identify the number in blue.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

25.

What are the blue numbers called?

a)

oxidation numbers

b)

subscripts

c)

group numbers

d)

product numbers

26.

How many atoms of nitrogen are present in this molecule?

a)

1

b)

2

c)

3

d)

4

27.

Balance this equation

_Al +_HCl --> _H₂+_AlCl₃

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

28.

Which of the following equations are correctly balanced?

a)

12CO₂ + H₂O ---> C₆H₁₂O₆ + O₂

b)

CO₂ + H₂O ---> 3C₆H₁₂O₆ + O₂

c)

CO₂ + 9H₂O ---> C₆H₁₂O₆ + O₂

d)

6CO₂ + 6H₂O ---> C₆H₁₂O₆ + 6O₂

29.

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

a)

1

b)

2

c)

3

d)

4

30.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

31.

How many valence electrons are found in atoms of group 14?

a)

4

b)

3

c)

14

d)

16

32.

How do you calculate power?

a)

P = W/t

b)

P = E/t

c)

P = w * t

d)

P = bbq/chicken

33.

How do we calculate work?

a)

W = F * d

b)

w = f * D

c)

W = F * D

d)

w = f * d

34.

What is the formula for Kinetic Energy?

a)

PE = m*g*h

b)

KE = 1/2m*v2

c)

W = F*d

d)

P = W/t

35.

What is the formula for calculating the total amount of mechanical energy?

a)

ME = KE + PE

b)

KE = ME + PE

c)

PE = KE + ME

d)

ME = 1/2 mv²

36.

The equation for POTENTIAL ENERGY is

a)

PE = mass x gravity x height

b)

PE = gravity x weight

c)

PE = height / work

d)

PE = work / time

37.

_______________ is done when a force acts on an object and the object moves in the direction of the force.

a)

Work

b)

Kinetic energy

c)

Watt

d)

Joule

38.

The unit for work (aka Newton-meter)

a)

Watt

b)

Power

c)

Work

d)

Joule

39.

________________ is the rate at which work is done.

a)

Power

b)

Work

c)

Time

d)

Energy

40.

The unit of power (aka Joule per second)

a)

Joule

b)

Minute

c)

Watt

d)

Pound

41.

A crane lifts an 8-m long steel girder weighing 2600 N up 15 m off the ground. The crane did ___ of work.

a)

0 J

b)

39000 J

c)

20800 J

d)

2600 J

42.

A 735kg empty roller coaster is at its starting point whose distance from the ground is 150m. After a while, it moves at point B whose distance from the ground is 120m. What is the kinetic energy of the coaster at point B?

a)

1,080,450J

b)

864,360J

c)

216,090J

d)

0J

43.

The SI unit of work is?

a)

Joules

b)

Watts

c)

Newtons

d)

meters

44.

How much work is being done with 200 N of force over 426 meters?

a)

85,200 J

b)

45,620 J

c)

90,480 J

d)

62,329 J

45.

What is g on Earth?

a)

9.8 m/s/s

b)

9.8 m/s

c)

42 m*s

d)

42 m/s/s

46.

When an object is carried at a constant

velocity by a force,

a)

no work is done on the

object.

b)

the work done is maximum on the

object.

c)

the work is done minimum on the

object.

d)

the work done is 100 % on the

object.

47.

Energy that is stored in bonds between atoms is:

a)

Mechanical energy

b)

Chemical energy

c)

Kinetic energy

d)

Nuclear energy

48.

Based on the formula for potential energy, what 2 variables influence PE the most?

a)

mass and height

b)

mass and velocity

c)

velocity and height

d)

velocity and mass

49.

If 150 Joules of work is needed to move a box 10 meters, what force was used?

a)

1500 N

b)

15 N

c)

1.5 N

d)

150 N

50.

Ahmad lifts a 50 kg hiking bag onto his sholuders through a vertical distance of 1.65 m in 3s. Calculate the power produced by Ahmad.

a)

809.33W

b)

269.78W

c)

27.5W

d)

82.5W

51.

Farah has a mass of 47 kg and is moving with initial speed of 5m/s. Find Farah's kinetic energy.

a)

1175J

b)

235J

c)

587.5J

d)

2305.35J

52.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

53.

Atoms of elements that are in the same group have the same number of

a)

protons.

b)

neutrons.

c)

valence electrons.

d)

protons and neutrons.

54.

Elements in an elemental family have similar

a)

atomic symbols.

b)

atomic sizes.

c)

atomic weights.

d)

chemical properties.

55.

Which of the following particle pairs has approximately the same mass?

a)

protons and neutrons

b)

protons and electrons

c)

neutrons and electrons

d)

protons, neutrons and electrons

56.

A carbon isotope consists of 6 protons, 6 electrons and 8 neutrons. What is the mass number for this isotope?

a)

12

b)

14

c)

6

d)

8

57.

Isotopes of the same element have the same number of

a)

protons

b)

neutrons

c)

electrons

d)

not enough information

58.

An atom is electrically neutral when

a)

protons and neutrons are the same

b)

protons and electrons are the same

c)

neutrons and electrons are the same

d)

neutrons balance the protons and electrons

59.

Where does fusion occur naturally?

a)

Underwater

b)

All around us

c)

In the radioactive waste

d)

On the sun

60.

The splitting of a nucleus into smaller nuclei is

a)

fusion

b)

fission

c)

decay

d)

gamma radiation

61.

Weight is measured in ____ and is a _____

a)

Newtons, Force

b)

Kg, Force

c)

Newtons, Mass

d)

Kg, Mass

62.

The four fundamental forces of nature are:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Gravity, Strong Nuclear, Weak Nuclear, Medium Nuclear

c)

Normal Force, Force due to gravity, Magnetism, Nuclear

d)

Nuclear, Electricity, Gravity, Atomic

63.

Rank the four fundamental forces of nature in order from weakest to strongest:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Weak Nuclear, Gravity, Electromagnetism, Strong Nuclear

c)

Gravity, Weak Nuclear, Electromagnetism, Strong Nuclear

d)

Weak Nuclear, Electromagnetism, Gravity, Strong Nuclear

64.

Gravity is due to:

a)

the pull between Earth and the moon.

b)

the pull between the Sun and Earth.

c)

the pull between any objects with mass.

d)

the pull between atomic nuclei.

65.

________ can be either a force of attraction or repulsion while ____________ is only a force of attraction.

a)

Gravity; Electromagnetism

b)

Electromagnetism; Gravity

c)

Gravity; Strong nuclear force

d)

Magnetism; Electricity

66.

____________ and ____________ are short range forces.

a)

Gravity, Electromagnetism

b)

Strong Nuclear, Weak Nuclear

c)

Electromagnetism, Strong Nuclear

d)

Gravity, Weak Nuclear

67.

Gravity has a range that is ____________.

a)

Short

b)

Long

c)

Infinite

d)

Variable

68.

Which is a factor that affects the strength of gravitational, magnetic, and electrostatic force fields?

a)

Mass

b)

Volume

c)

Distance

d)

Density

69.

When dry ice (solid carbon dioxide) sublimes it goes directly from a solid to a gas. What type of change is occurring?

a)

Chemical change

b)

Physical change

c)

None of the above

70.

How many oxygen atoms are present in the following?
4Ca(OH)₂

a)

4

b)

6

c)

8

d)

1

71.

Fill in the blank to balance the chemical equation.
2KI + ____Cl₂→ 2KCl + I₂

a)

1

b)

2

c)

3

d)

4

72.

What coefficient should go in the blank space to balance the chemical equation?
2Al +____ HCl → 2AlCl₃ + 3H2

a)

2

b)

4

c)

3

d)

6

73.

Identify the Reactants in this equation.

a)

A

b)

B

74.

Identify the number in blue.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

75.

What are the blue numbers called?

a)

oxidation numbers

b)

subscripts

c)

group numbers

d)

product numbers

76.

How many atoms of nitrogen are present in this molecule?

a)

1

b)

2

c)

3

d)

4

77.

Balance this equation

_Al +_HCl --> _H₂+_AlCl₃

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

78.

Which of the following equations are correctly balanced?

a)

12CO₂ + H₂O ---> C₆H₁₂O₆ + O₂

b)

CO₂ + H₂O ---> 3C₆H₁₂O₆ + O₂

c)

CO₂ + 9H₂O ---> C₆H₁₂O₆ + O₂

d)

6CO₂ + 6H₂O ---> C₆H₁₂O₆ + 6O₂

79.

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

a)

1

b)

2

c)

3

d)

4

80.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

81.

How many valence electrons are found in atoms of group 14?

a)

4

b)

3

c)

14

d)

16

82.

How do you calculate power?

a)

P = W/t

b)

P = E/t

c)

P = w * t

d)

P = bbq/chicken

83.

How do we calculate work?

a)

W = F * d

b)

w = f * D

c)

W = F * D

d)

w = f * d

84.

What is the formula for Kinetic Energy?

a)

PE = m*g*h

b)

KE = 1/2m*v2

c)

W = F*d

d)

P = W/t

85.

What is the formula for calculating the total amount of mechanical energy?

a)

ME = KE + PE

b)

KE = ME + PE

c)

PE = KE + ME

d)

ME = 1/2 mv²

86.

The equation for POTENTIAL ENERGY is

a)

PE = mass x gravity x height

b)

PE = gravity x weight

c)

PE = height / work

d)

PE = work / time

87.

_______________ is done when a force acts on an object and the object moves in the direction of the force.

a)

Work

b)

Kinetic energy

c)

Watt

d)

Joule

88.

The unit for work (aka Newton-meter)

a)

Watt

b)

Power

c)

Work

d)

Joule

89.

________________ is the rate at which work is done.

a)

Power

b)

Work

c)

Time

d)

Energy

90.

The unit of power (aka Joule per second)

a)

Joule

b)

Minute

c)

Watt

d)

Pound

91.

A crane lifts an 8-m long steel girder weighing 2600 N up 15 m off the ground. The crane did ___ of work.

a)

0 J

b)

39000 J

c)

20800 J

d)

2600 J

92.

A 735kg empty roller coaster is at its starting point whose distance from the ground is 150m. After a while, it moves at point B whose distance from the ground is 120m. What is the kinetic energy of the coaster at point B?

a)

1,080,450J

b)

864,360J

c)

216,090J

d)

0J

93.

The SI unit of work is?

a)

Joules

b)

Watts

c)

Newtons

d)

meters

94.

How much work is being done with 200 N of force over 426 meters?

a)

85,200 J

b)

45,620 J

c)

90,480 J

d)

62,329 J

95.

What is g on Earth?

a)

9.8 m/s/s

b)

9.8 m/s

c)

42 m*s

d)

42 m/s/s

96.

When an object is carried at a constant

velocity by a force,

a)

no work is done on the

object.

b)

the work done is maximum on the

object.

c)

the work is done minimum on the

object.

d)

the work done is 100 % on the

object.

97.

Energy that is stored in bonds between atoms is:

a)

Mechanical energy

b)

Chemical energy

c)

Kinetic energy

d)

Nuclear energy

98.

Based on the formula for potential energy, what 2 variables influence PE the most?

a)

mass and height

b)

mass and velocity

c)

velocity and height

d)

velocity and mass

99.

If 150 Joules of work is needed to move a box 10 meters, what force was used?

a)

1500 N

b)

15 N

c)

1.5 N

d)

150 N

100.

Ahmad lifts a 50 kg hiking bag onto his sholuders through a vertical distance of 1.65 m in 3s. Calculate the power produced by Ahmad.

a)

809.33W

b)

269.78W

c)

27.5W

d)

82.5W

101.

Farah has a mass of 47 kg and is moving with initial speed of 5m/s. Find Farah's kinetic energy.

a)

1175J

b)

235J

c)

587.5J

d)

2305.35J

102.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

103.

Atoms of elements that are in the same group have the same number of

a)

protons.

b)

neutrons.

c)

valence electrons.

d)

protons and neutrons.

104.

Elements in an elemental family have similar

a)

atomic symbols.

b)

atomic sizes.

c)

atomic weights.

d)

chemical properties.

105.

Which of the following particle pairs has approximately the same mass?

a)

protons and neutrons

b)

protons and electrons

c)

neutrons and electrons

d)

protons, neutrons and electrons

106.

A carbon isotope consists of 6 protons, 6 electrons and 8 neutrons. What is the mass number for this isotope?

a)

12

b)

14

c)

6

d)

8

107.

Isotopes of the same element have the same number of

a)

protons

b)

neutrons

c)

electrons

d)

not enough information

108.

An atom is electrically neutral when

a)

protons and neutrons are the same

b)

protons and electrons are the same

c)

neutrons and electrons are the same

d)

neutrons balance the protons and electrons

109.

Where does fusion occur naturally?

a)

Underwater

b)

All around us

c)

In the radioactive waste

d)

On the sun

110.

The splitting of a nucleus into smaller nuclei is

a)

fusion

b)

fission

c)

decay

d)

gamma radiation

111.

Weight is measured in ____ and is a _____

a)

Newtons, Force

b)

Kg, Force

c)

Newtons, Mass

d)

Kg, Mass

112.

The four fundamental forces of nature are:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Gravity, Strong Nuclear, Weak Nuclear, Medium Nuclear

c)

Normal Force, Force due to gravity, Magnetism, Nuclear

d)

Nuclear, Electricity, Gravity, Atomic

113.

Rank the four fundamental forces of nature in order from weakest to strongest:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Weak Nuclear, Gravity, Electromagnetism, Strong Nuclear

c)

Gravity, Weak Nuclear, Electromagnetism, Strong Nuclear

d)

Weak Nuclear, Electromagnetism, Gravity, Strong Nuclear

114.

Gravity is due to:

a)

the pull between Earth and the moon.

b)

the pull between the Sun and Earth.

c)

the pull between any objects with mass.

d)

the pull between atomic nuclei.

115.

________ can be either a force of attraction or repulsion while ____________ is only a force of attraction.

a)

Gravity; Electromagnetism

b)

Electromagnetism; Gravity

c)

Gravity; Strong nuclear force

d)

Magnetism; Electricity

116.

____________ and ____________ are short range forces.

a)

Gravity, Electromagnetism

b)

Strong Nuclear, Weak Nuclear

c)

Electromagnetism, Strong Nuclear

d)

Gravity, Weak Nuclear

117.

Gravity has a range that is ____________.

a)

Short

b)

Long

c)

Infinite

d)

Variable

118.

Which is a factor that affects the strength of gravitational, magnetic, and electrostatic force fields?

a)

Mass

b)

Volume

c)

Distance

d)

Density

119.

When dry ice (solid carbon dioxide) sublimes it goes directly from a solid to a gas. What type of change is occurring?

a)

Chemical change

b)

Physical change

c)

None of the above

120.

How many oxygen atoms are present in the following?
4Ca(OH)₂

a)

4

b)

6

c)

8

d)

1

121.

Fill in the blank to balance the chemical equation.
2KI + ____Cl₂→ 2KCl + I₂

a)

1

b)

2

c)

3

d)

4

122.

What coefficient should go in the blank space to balance the chemical equation?
2Al +____ HCl → 2AlCl₃ + 3H2

a)

2

b)

4

c)

3

d)

6

123.

Identify the Reactants in this equation.

a)

A

b)

B

124.

Identify the number in blue.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

125.

What are the blue numbers called?

a)

oxidation numbers

b)

subscripts

c)

group numbers

d)

product numbers

126.

How many atoms of nitrogen are present in this molecule?

a)

1

b)

2

c)

3

d)

4

127.

Balance this equation

_Al +_HCl --> _H₂+_AlCl₃

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

128.

Which of the following equations are correctly balanced?

a)

12CO₂ + H₂O ---> C₆H₁₂O₆ + O₂

b)

CO₂ + H₂O ---> 3C₆H₁₂O₆ + O₂

c)

CO₂ + 9H₂O ---> C₆H₁₂O₆ + O₂

d)

6CO₂ + 6H₂O ---> C₆H₁₂O₆ + 6O₂

129.

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

a)

1

b)

2

c)

3

d)

4

130.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

131.

How many valence electrons are found in atoms of group 14?

a)

4

b)

3

c)

14

d)

16

132.

How do you calculate power?

a)

P = W/t

b)

P = E/t

c)

P = w * t

d)

P = bbq/chicken

133.

How do we calculate work?

a)

W = F * d

b)

w = f * D

c)

W = F * D

d)

w = f * d

134.

What is the formula for Kinetic Energy?

a)

PE = m*g*h

b)

KE = 1/2m*v2

c)

W = F*d

d)

P = W/t

135.

What is the formula for calculating the total amount of mechanical energy?

a)

ME = KE + PE

b)

KE = ME + PE

c)

PE = KE + ME

d)

ME = 1/2 mv²

136.

The equation for POTENTIAL ENERGY is

a)

PE = mass x gravity x height

b)

PE = gravity x weight

c)

PE = height / work

d)

PE = work / time

137.

_______________ is done when a force acts on an object and the object moves in the direction of the force.

a)

Work

b)

Kinetic energy

c)

Watt

d)

Joule

138.

The unit for work (aka Newton-meter)

a)

Watt

b)

Power

c)

Work

d)

Joule

139.

________________ is the rate at which work is done.

a)

Power

b)

Work

c)

Time

d)

Energy

140.

The unit of power (aka Joule per second)

a)

Joule

b)

Minute

c)

Watt

d)

Pound

141.

A crane lifts an 8-m long steel girder weighing 2600 N up 15 m off the ground. The crane did ___ of work.

a)

0 J

b)

39000 J

c)

20800 J

d)

2600 J

142.

A 735kg empty roller coaster is at its starting point whose distance from the ground is 150m. After a while, it moves at point B whose distance from the ground is 120m. What is the kinetic energy of the coaster at point B?

a)

1,080,450J

b)

864,360J

c)

216,090J

d)

0J

143.

The SI unit of work is?

a)

Joules

b)

Watts

c)

Newtons

d)

meters

144.

How much work is being done with 200 N of force over 426 meters?

a)

85,200 J

b)

45,620 J

c)

90,480 J

d)

62,329 J

145.

What is g on Earth?

a)

9.8 m/s/s

b)

9.8 m/s

c)

42 m*s

d)

42 m/s/s

146.

When an object is carried at a constant

velocity by a force,

a)

no work is done on the

object.

b)

the work done is maximum on the

object.

c)

the work is done minimum on the

object.

d)

the work done is 100 % on the

object.

147.

Energy that is stored in bonds between atoms is:

a)

Mechanical energy

b)

Chemical energy

c)

Kinetic energy

d)

Nuclear energy

148.

Based on the formula for potential energy, what 2 variables influence PE the most?

a)

mass and height

b)

mass and velocity

c)

velocity and height

d)

velocity and mass

149.

If 150 Joules of work is needed to move a box 10 meters, what force was used?

a)

1500 N

b)

15 N

c)

1.5 N

d)

150 N

150.

Ahmad lifts a 50 kg hiking bag onto his sholuders through a vertical distance of 1.65 m in 3s. Calculate the power produced by Ahmad.

a)

809.33W

b)

269.78W

c)

27.5W

d)

82.5W

151.

Farah has a mass of 47 kg and is moving with initial speed of 5m/s. Find Farah's kinetic energy.

a)

1175J

b)

235J

c)

587.5J

d)

2305.35J

152.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

153.

Atoms of elements that are in the same group have the same number of

a)

protons.

b)

neutrons.

c)

valence electrons.

d)

protons and neutrons.

154.

Elements in an elemental family have similar

a)

atomic symbols.

b)

atomic sizes.

c)

atomic weights.

d)

chemical properties.

155.

Which of the following particle pairs has approximately the same mass?

a)

protons and neutrons

b)

protons and electrons

c)

neutrons and electrons

d)

protons, neutrons and electrons

156.

A carbon isotope consists of 6 protons, 6 electrons and 8 neutrons. What is the mass number for this isotope?

a)

12

b)

14

c)

6

d)

8

157.

Isotopes of the same element have the same number of

a)

protons

b)

neutrons

c)

electrons

d)

not enough information

158.

An atom is electrically neutral when

a)

protons and neutrons are the same

b)

protons and electrons are the same

c)

neutrons and electrons are the same

d)

neutrons balance the protons and electrons

159.

Where does fusion occur naturally?

a)

Underwater

b)

All around us

c)

In the radioactive waste

d)

On the sun

160.

The splitting of a nucleus into smaller nuclei is

a)

fusion

b)

fission

c)

decay

d)

gamma radiation

161.

Weight is measured in ____ and is a _____

a)

Newtons, Force

b)

Kg, Force

c)

Newtons, Mass

d)

Kg, Mass

162.

The four fundamental forces of nature are:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Gravity, Strong Nuclear, Weak Nuclear, Medium Nuclear

c)

Normal Force, Force due to gravity, Magnetism, Nuclear

d)

Nuclear, Electricity, Gravity, Atomic

163.

Rank the four fundamental forces of nature in order from weakest to strongest:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Weak Nuclear, Gravity, Electromagnetism, Strong Nuclear

c)

Gravity, Weak Nuclear, Electromagnetism, Strong Nuclear

d)

Weak Nuclear, Electromagnetism, Gravity, Strong Nuclear

164.

Gravity is due to:

a)

the pull between Earth and the moon.

b)

the pull between the Sun and Earth.

c)

the pull between any objects with mass.

d)

the pull between atomic nuclei.

165.

________ can be either a force of attraction or repulsion while ____________ is only a force of attraction.

a)

Gravity; Electromagnetism

b)

Electromagnetism; Gravity

c)

Gravity; Strong nuclear force

d)

Magnetism; Electricity

166.

____________ and ____________ are short range forces.

a)

Gravity, Electromagnetism

b)

Strong Nuclear, Weak Nuclear

c)

Electromagnetism, Strong Nuclear

d)

Gravity, Weak Nuclear

167.

Gravity has a range that is ____________.

a)

Short

b)

Long

c)

Infinite

d)

Variable

168.

Which is a factor that affects the strength of gravitational, magnetic, and electrostatic force fields?

a)

Mass

b)

Volume

c)

Distance

d)

Density

169.

When dry ice (solid carbon dioxide) sublimes it goes directly from a solid to a gas. What type of change is occurring?

a)

Chemical change

b)

Physical change

c)

None of the above

170.

How many oxygen atoms are present in the following?
4Ca(OH)₂

a)

4

b)

6

c)

8

d)

1

171.

Fill in the blank to balance the chemical equation.
2KI + ____Cl₂→ 2KCl + I₂

a)

1

b)

2

c)

3

d)

4

172.

What coefficient should go in the blank space to balance the chemical equation?
2Al +____ HCl → 2AlCl₃ + 3H2

a)

2

b)

4

c)

3

d)

6

173.

Identify the Reactants in this equation.

a)

A

b)

B

174.

Identify the number in blue.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

175.

What are the blue numbers called?

a)

oxidation numbers

b)

subscripts

c)

group numbers

d)

product numbers

176.

How many atoms of nitrogen are present in this molecule?

a)

1

b)

2

c)

3

d)

4

177.

Balance this equation

_Al +_HCl --> _H₂+_AlCl₃

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

178.

Which of the following equations are correctly balanced?

a)

12CO₂ + H₂O ---> C₆H₁₂O₆ + O₂

b)

CO₂ + H₂O ---> 3C₆H₁₂O₆ + O₂

c)

CO₂ + 9H₂O ---> C₆H₁₂O₆ + O₂

d)

6CO₂ + 6H₂O ---> C₆H₁₂O₆ + 6O₂

179.

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

a)

1

b)

2

c)

3

d)

4

180.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

181.

How many valence electrons are found in atoms of group 14?

a)

4

b)

3

c)

14

d)

16

182.

How do you calculate power?

a)

P = W/t

b)

P = E/t

c)

P = w * t

d)

P = bbq/chicken

183.

How do we calculate work?

a)

W = F * d

b)

w = f * D

c)

W = F * D

d)

w = f * d

184.

What is the formula for Kinetic Energy?

a)

PE = m*g*h

b)

KE = 1/2m*v2

c)

W = F*d

d)

P = W/t

185.

What is the formula for calculating the total amount of mechanical energy?

a)

ME = KE + PE

b)

KE = ME + PE

c)

PE = KE + ME

d)

ME = 1/2 mv²

186.

The equation for POTENTIAL ENERGY is

a)

PE = mass x gravity x height

b)

PE = gravity x weight

c)

PE = height / work

d)

PE = work / time

187.

_______________ is done when a force acts on an object and the object moves in the direction of the force.

a)

Work

b)

Kinetic energy

c)

Watt

d)

Joule

188.

The unit for work (aka Newton-meter)

a)

Watt

b)

Power

c)

Work

d)

Joule

189.

________________ is the rate at which work is done.

a)

Power

b)

Work

c)

Time

d)

Energy

190.

The unit of power (aka Joule per second)

a)

Joule

b)

Minute

c)

Watt

d)

Pound

191.

A crane lifts an 8-m long steel girder weighing 2600 N up 15 m off the ground. The crane did ___ of work.

a)

0 J

b)

39000 J

c)

20800 J

d)

2600 J

192.

A 735kg empty roller coaster is at its starting point whose distance from the ground is 150m. After a while, it moves at point B whose distance from the ground is 120m. What is the kinetic energy of the coaster at point B?

a)

1,080,450J

b)

864,360J

c)

216,090J

d)

0J

193.

The SI unit of work is?

a)

Joules

b)

Watts

c)

Newtons

d)

meters

194.

How much work is being done with 200 N of force over 426 meters?

a)

85,200 J

b)

45,620 J

c)

90,480 J

d)

62,329 J

195.

What is g on Earth?

a)

9.8 m/s/s

b)

9.8 m/s

c)

42 m*s

d)

42 m/s/s

196.

When an object is carried at a constant

velocity by a force,

a)

no work is done on the

object.

b)

the work done is maximum on the

object.

c)

the work is done minimum on the

object.

d)

the work done is 100 % on the

object.

197.

Energy that is stored in bonds between atoms is:

a)

Mechanical energy

b)

Chemical energy

c)

Kinetic energy

d)

Nuclear energy

198.

Based on the formula for potential energy, what 2 variables influence PE the most?

a)

mass and height

b)

mass and velocity

c)

velocity and height

d)

velocity and mass

199.

If 150 Joules of work is needed to move a box 10 meters, what force was used?

a)

1500 N

b)

15 N

c)

1.5 N

d)

150 N

200.

Ahmad lifts a 50 kg hiking bag onto his sholuders through a vertical distance of 1.65 m in 3s. Calculate the power produced by Ahmad.

a)

809.33W

b)

269.78W

c)

27.5W

d)

82.5W

201.

Farah has a mass of 47 kg and is moving with initial speed of 5m/s. Find Farah's kinetic energy.

a)

1175J

b)

235J

c)

587.5J

d)

2305.35J

202.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

203.

Atoms of elements that are in the same group have the same number of

a)

protons.

b)

neutrons.

c)

valence electrons.

d)

protons and neutrons.

204.

Elements in an elemental family have similar

a)

atomic symbols.

b)

atomic sizes.

c)

atomic weights.

d)

chemical properties.

205.

Which of the following particle pairs has approximately the same mass?

a)

protons and neutrons

b)

protons and electrons

c)

neutrons and electrons

d)

protons, neutrons and electrons

206.

A carbon isotope consists of 6 protons, 6 electrons and 8 neutrons. What is the mass number for this isotope?

a)

12

b)

14

c)

6

d)

8

207.

Isotopes of the same element have the same number of

a)

protons

b)

neutrons

c)

electrons

d)

not enough information

208.

An atom is electrically neutral when

a)

protons and neutrons are the same

b)

protons and electrons are the same

c)

neutrons and electrons are the same

d)

neutrons balance the protons and electrons

209.

Where does fusion occur naturally?

a)

Underwater

b)

All around us

c)

In the radioactive waste

d)

On the sun

210.

The splitting of a nucleus into smaller nuclei is

a)

fusion

b)

fission

c)

decay

d)

gamma radiation

211.

Weight is measured in ____ and is a _____

a)

Newtons, Force

b)

Kg, Force

c)

Newtons, Mass

d)

Kg, Mass

212.

The four fundamental forces of nature are:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Gravity, Strong Nuclear, Weak Nuclear, Medium Nuclear

c)

Normal Force, Force due to gravity, Magnetism, Nuclear

d)

Nuclear, Electricity, Gravity, Atomic

213.

Rank the four fundamental forces of nature in order from weakest to strongest:

a)

Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear

b)

Weak Nuclear, Gravity, Electromagnetism, Strong Nuclear

c)

Gravity, Weak Nuclear, Electromagnetism, Strong Nuclear

d)

Weak Nuclear, Electromagnetism, Gravity, Strong Nuclear

214.

Gravity is due to:

a)

the pull between Earth and the moon.

b)

the pull between the Sun and Earth.

c)

the pull between any objects with mass.

d)

the pull between atomic nuclei.

215.

________ can be either a force of attraction or repulsion while ____________ is only a force of attraction.

a)

Gravity; Electromagnetism

b)

Electromagnetism; Gravity

c)

Gravity; Strong nuclear force

d)

Magnetism; Electricity

216.

____________ and ____________ are short range forces.

a)

Gravity, Electromagnetism

b)

Strong Nuclear, Weak Nuclear

c)

Electromagnetism, Strong Nuclear

d)

Gravity, Weak Nuclear

217.

Gravity has a range that is ____________.

a)

Short

b)

Long

c)

Infinite

d)

Variable

218.

Which is a factor that affects the strength of gravitational, magnetic, and electrostatic force fields?

a)

Mass

b)

Volume

c)

Distance

d)

Density

219.

When dry ice (solid carbon dioxide) sublimes it goes directly from a solid to a gas. What type of change is occurring?

a)

Chemical change

b)

Physical change

c)

None of the above

220.

How many oxygen atoms are present in the following?
4Ca(OH)₂

a)

4

b)

6

c)

8

d)

1

221.

Fill in the blank to balance the chemical equation.
2KI + ____Cl₂→ 2KCl + I₂

a)

1

b)

2

c)

3

d)

4

222.

What coefficient should go in the blank space to balance the chemical equation?
2Al +____ HCl → 2AlCl₃ + 3H2

a)

2

b)

4

c)

3

d)

6

223.

Identify the Reactants in this equation.

a)

A

b)

B

224.

Identify the number in blue.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

225.

What are the blue numbers called?

a)

oxidation numbers

b)

subscripts

c)

group numbers

d)

product numbers

226.

How many atoms of nitrogen are present in this molecule?

a)

1

b)

2

c)

3

d)

4

227.

Balance this equation

_Al +_HCl --> _H₂+_AlCl₃

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

228.

Which of the following equations are correctly balanced?

a)

12CO₂ + H₂O ---> C₆H₁₂O₆ + O₂

b)

CO₂ + H₂O ---> 3C₆H₁₂O₆ + O₂

c)

CO₂ + 9H₂O ---> C₆H₁₂O₆ + O₂

d)

6CO₂ + 6H₂O ---> C₆H₁₂O₆ + 6O₂

229.

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

a)

1

b)

2

c)

3

d)

4

230.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

231.

How many valence electrons are found in atoms of group 14?

a)

4

b)

3

c)

14

d)

16

232.

How do you calculate power?

a)

P = W/t

b)

P = E/t

c)

P = w * t

d)

P = bbq/chicken

233.

How do we calculate work?

a)

W = F * d

b)

w = f * D

c)

W = F * D

d)

w = f * d

234.

What is the formula for Kinetic Energy?

a)

PE = m*g*h

b)

KE = 1/2m*v2

c)

W = F*d

d)

P = W/t

235.

What is the formula for calculating the total amount of mechanical energy?

a)

ME = KE + PE

b)

KE = ME + PE

c)

PE = KE + ME

d)

ME = 1/2 mv²

236.

The equation for POTENTIAL ENERGY is

a)

PE = mass x gravity x height

b)

PE = gravity x weight

c)

PE = height / work

d)

PE = work / time

237.

_______________ is done when a force acts on an object and the object moves in the direction of the force.

a)

Work

b)

Kinetic energy

c)

Watt

d)

Joule

238.

The unit for work (aka Newton-meter)

a)

Watt

b)

Power

c)

Work

d)

Joule

239.

________________ is the rate at which work is done.

a)

Power

b)

Work

c)

Time

d)

Energy

240.

The unit of power (aka Joule per second)

a)

Joule

b)

Minute

c)

Watt

d)

Pound

241.

A crane lifts an 8-m long steel girder weighing 2600 N up 15 m off the ground. The crane did ___ of work.

a)

0 J

b)

39000 J

c)

20800 J

d)

2600 J

242.

A 735kg empty roller coaster is at its starting point whose distance from the ground is 150m. After a while, it moves at point B whose distance from the ground is 120m. What is the kinetic energy of the coaster at point B?

a)

1,080,450J

b)

864,360J

c)

216,090J

d)

0J

243.

The SI unit of work is?

a)

Joules

b)

Watts

c)

Newtons

d)

meters

244.

How much work is being done with 200 N of force over 426 meters?

a)

85,200 J

b)

45,620 J

c)

90,480 J

d)

62,329 J

245.

What is g on Earth?

a)

9.8 m/s/s

b)

9.8 m/s

c)

42 m*s

d)

42 m/s/s

246.

When an object is carried at a constant

velocity by a force,

a)

no work is done on the

object.

b)

the work done is maximum on the

object.

c)

the work is done minimum on the

object.

d)

the work done is 100 % on the

object.

247.

Energy that is stored in bonds between atoms is:

a)

Mechanical energy

b)

Chemical energy

c)

Kinetic energy

d)

Nuclear energy

248.

Based on the formula for potential energy, what 2 variables influence PE the most?

a)

mass and height

b)

mass and velocity

c)

velocity and height

d)

velocity and mass

249.

If 150 Joules of work is needed to move a box 10 meters, what force was used?

a)

1500 N

b)

15 N

c)

1.5 N

d)

150 N

250.

Ahmad lifts a 50 kg hiking bag onto his sholuders through a vertical distance of 1.65 m in 3s. Calculate the power produced by Ahmad.

a)

809.33W

b)

269.78W

c)

27.5W

d)

82.5W

251.

Farah has a mass of 47 kg and is moving with initial speed of 5m/s. Find Farah's kinetic energy.

a)

1175J

b)

235J

c)

587.5J

d)

2305.35J

Science

Total questions: 251

Worksheet time: 63hrs 45mins

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