Free Printable Science Pearlspedia Year 10

1.

What is the name of the element with an atomic number of 3?

a)

Lithium

b)

Magnesium

c)

Sodium

d)

Potassium

2.

The atomic mass of an element tells you

a)

The number of protons and neutrons

b)

The number of protons and electrons

c)

The number of neutrons and electrons

d)

The number of neutrons only

3.

The atomic number tells you

a)

The number of electrons

b)

The number of protons

c)

The number of neutrons

d)

The number of nucleons

4.

The electronic configuration of a magnesium ATOM is

a)

2, 8

b)

2, 8, 3

c)

2, 6

d)

2, 8, 2

5.

The electron configuration of a magnesium ION is

a)

2, 8, 6

b)

2, 8, 8

c)

2, 8, 2

d)

2, 8

6.

Elements from groups 1-3

a)

Are metals and lose electrons in a chemical reaction to become CATIONS

b)

Are metals and lose electrons in a chemical reaction to become ANIONS

c)

Are metals and gain electrons in a chemical reaction to become CATIONS

d)

Are metals and gain electrons in a chemical reaction to become ANIONS

7.

Which element has an electronic configuration of 2, 7

a)

Chlorine

b)

Bromine

c)

Fluorine

d)

Iodine

8.

Phosphorus does the following in a chemical reaction

a)

LOSES 3 electrons to become an ANION

b)

LOSES 3 electrons to become a CATION

c)

GAINS 3 electrons to become a CATION

d)

GAINS 3 electrons to become an ANION

9.

When lithium and potassium react, they would undergo which type of bonding

a)

Ionic

b)

Metallic

c)

Covalent

d)

Diamagnetic

10.

When hydrogen and sulfur react together, they undergo which type of bonding?

a)

Metallic

b)

Ionic

c)

Teronic

d)

Covalent

11.

When sodium and bromine undergo a chemical reaction, ionic bonding takes place. Which description best matches what occurs?

a)

Sodium is from group 1. It gives its 1 valence electron to chlorine. Chlorine is from group 7. It received the 1 valence electron from sodium.

b)

Sodium is from group 7. It gives its 1 valence electron to chlorine. Chlorine is from group 1. It received the 1 valence electron from sodium.

c)

Sodium is from group 1. It receives 1 valence electron from chlorine. Chlorine is from group 7. It gives 1 valence electron to sodium.

d)

Sodium is from group 7. It receives 1 valence electron from chlorine. Chlorine is from group 1. It gives 1 valence electron to sodium.

12.

Metallic bonding takes place between

a)

A metal and non-metal

b)

Elements from groups 1-3 and transition metals

c)

Two non-metals

d)

A non-metal and a noble gas

13.

Which statement best describes the following species: Al³⁺

a)

This is an aluminium cation. It has lost 3 electrons

b)

This is an aluminium cation. It has gained 3 electrons

c)

This is an aluminium anion. It has lost 3 electrons

d)

This is an aluminium anion. It has gained 3 electrons

14.

Which statement best describes the following species: O^2-

a)

This is an oxygen anion. It is called oxygen

b)

This is an oxygen anion. It is called oxide

c)

This is an oxygen cation. It is called oxygen

d)

This is an oxygen cation. It is called oxide

15.

How would you name the following compound? MgS₂

a)

Magnesium sulfur

b)

Dimagnesium sulfide

c)

Magnesium sulfide

d)

Magneside sulfide

16.

Write the formula for calcium chloride

a)

CaCl

b)

Ca₂Cl

c)

CaCl₂

d)

Ca₃Cl₂

17.

Write the electronic configuration of the Boron atom (as an ion)

a)

2, 3

b)

3, 2, 1

c)

1

d)

2

18.

Which of the following statements regarding halogens is true?

a)

Halogens are from group 6. They lose 2 electrons in a chemical reaction

b)

Halogens are from group 7. They gain 1 electron in a chemical reaction.

c)

Halogens are from group 6. They gain 2 electrons in a chemical reaction.

d)

Halogens are from group 7. They lose 1 electron in a chemical reaction.

19.

According to the chemical symbol... Which statement is correct?

a)

This is potassium. It's from group 1. It has 19 protons, 19 electrons and 20 neutrons.

b)

This is potassium. It's from group 1. It has 19 protons, 20 electrons and 20 neutrons.

c)

This is potassium. It's from group 7. It has 19 protons, 20 electrons and 19 neutrons.

d)

This is potassium. It's from group 7. It has 19 protons, 19 electrons and 20 neutrons.

20.

The following structure can be described as...

a)

An element as it only has 1 type of atom present. It has covalent bonding.

b)

A compound as it has more than 1 type of atom present. It has covalent bonding.

c)

An element as it has more than 1 type of atom present. It has metallic bonding.

d)

An element because it has more than 1 type of atom present. It has covalent bonding.

21.

What element is Na ?

a)

Sodium

b)

Nanium

c)

Silicon

d)

Nastium

22.

What is the element symbol for potassium?

a)

P

b)

Pt

c)

Ps

d)

K

23.

Which of the following is NOT a property of metals?

a)

Malleable

b)

Lustre

c)

Good electrical conductivity

d)

Brittle

24.

Which of the following is not a group 1 metal?

a)

Lithium

b)

Sodium

c)

Potassium

d)

Calcium

25.

Which of the following is a transition metal?

a)

Magnesium

b)

Aluminium

c)

Iron

d)

Neon

26.

Which of the following is a halogen?

a)

Carbon

b)

Nitrogen

c)

Neon

d)

Fluorine

27.

Which subatomic particles are located in the nucleus?

a)

Electrons only

b)

Electrons and neutrons

c)

Protons and electrons

d)

Protons and neutrons

28.

Elements in the periodic table ______ in ___________ from the simplest element to the most complex.

a)

increase, atomic number

b)

increase, neutrons

c)

decrease, atomic number

d)

decrease, atomic mass

29.

What is the total number of atoms present in the formula H₂SO_{4 ?}

a)

1

b)

3

c)

6

d)

7

30.

A group on the periodic table is arranged ________ where as, a period is arranged ________.

a)

horizontally, vertically

b)

vertically, horizontally

31.

An atom has an atomic number of 17. How many electrons would there be on each shell? (From inner to outer shell)

a)

2, 10, 5

b)

8, 8, 1

c)

2, 8, 7

d)

8, 7, 2

32.

How many neutrons does this element have?

a)

10

b)

9

c)

19

d)

0

33.

Name the following ionic compound: BeCl₂

a)

beryllium chlorine

b)

beryllium II chloride

c)

beryllium chloride

d)

beryllium dichloride

34.

Which of the following is NOT a polyatomic ion?

a)

NH₄⁺

b)

HCO₃^-

c)

Ca²⁺

d)

SO₄^2-

35.

What subatomic particle changes the name of the atom?

a)

Neutron

b)

Proton

c)

Voltron

d)

Electron

36.

What two particles affect the charge of an atom?

a)

Electrons & Neutrons

b)

Protons & Electrons

c)

Neutrons & Protons

37.

The majority of an atom's mass exists where?

a)

In the nucleus

b)

In the electron cloud

c)

In the space between the nucleus and the electrons

d)

In the neutrons

38.

What charge does an atom have if it GAINS an electrons?

a)

Positive (+)

b)

Negative (-)

c)

atoms can not gain electrons

39.

Who is credited for the first Periodic Table?

a)

Mendeleev

b)

Mosely

c)

Dalton

d)

Rutherford

40.

Oxygen with a negative two charge is an example of

a)

a cation

b)

an anion

c)

a polar molecule

d)

a nonpolar molecule

41.

An ionic bond is formed between

a)

2 nonmetals

b)

a metal and a nonmetal

c)

2 metals

d)

2 polar molecules

42.

An atom containing 19 protons, 20 neutrons, and 19 electrons has a mass number of

a)

19

b)

20

c)

39

d)

58

43.

When becoming an ion, an element with 6 valence (outer) electrons would have a charge of...

a)

2-

b)

2+

c)

6-

d)

6+

44.

Carbon-12 and Carbon-11 are

a)

isotopes

b)

different elements

c)

compounds

d)

neutrons

45.

What is the formula for magnesium chloride?

a)

MgCl

b)

Mg₂Cl

c)

MgCl₂

d)

Mg(ClO₃)₂

46.

Which is the best definition for an ion?

a)

An atom has a net charge greater or less than zero.

b)

An ion has the same number of electrons as an atom of the same element.

c)

An ion has a net charge greater or less than zero.

d)

There is no difference

47.

If an element has 5 protons and 5 electrons, what is its net charge?

a)

+5

b)

-5

c)

0

d)

-1

48.

The group of an element tells us...

a)

The number of protons

b)

The number of electron shells

c)

The number of valence electrons

d)

The number of total electrons

49.

What is the compound formula for Carbon Monoxide?

a)

CO₂

b)

CO

c)

C₂O₄

d)

None of these

50.

Ionic Bonds are formed between...

a)

two metals

b)

two non-metals

c)

metal and a non-metal

d)

different every time

51.

H₂SO₄_(aq)+ KOH_(aq) → K₂SO₄_(aq) + H₂O

a)

Precipitation

b)

Acid-base

c)

Combustion

d)

Single Replacement

52.

The toxicity of a substance refers to ..

a)

its ability to burn ie catch on fire

b)

its ability to react quickly with other substances

c)

how its affects your health

d)

its ability to explode

53.

Acids have pH values of

a)

7

b)

less than 7

c)

more than 7

d)

14

54.

The positive particles of an atom are

a)

electrons

b)

positrons

c)

neutrons

d)

protons

55.

the central region of an atom where its neutrons and protons are is its

a)

nucleus

b)

electron cloud

c)

core

d)

center

56.

an atom with atomic number 6 would have how many protons

a)

6

b)

12

c)

3

d)

cannot be determined

57.

When an atom loses a valence electron, it becomes a(n) _____________ ion.

a)

positive

b)

negative

c)

neutral

d)

polyatomic

58.

When an atom gains a valence electron, it becomes a(n) _____________ ion.

a)

positive

b)

negative

c)

neutral

d)

polyatomic

59.

An electron has what kind of charge?

a)

no charge

b)

positive

c)

negative

d)

it depends

60.

Atoms that gain & lose electrons are called _________

a)

ions

b)

isotopes

c)

radioactive

d)

corrosive

61.

What is the charge of an atom that has lost one electron?

a)

-1

b)

-2

c)

+1

d)

+2

62.

What is the charge of an atom that has gained one electron?

a)

-1

b)

-2

c)

+1

d)

+2

63.

What is the atomic number for an element with three protons?

a)

2

b)

1

c)

3

d)

6

64.

How many neutron are in the atom "K"?

a)

7

b)

2

c)

39

d)

20

65.

What is the number of protons that the element in this image contain?

a)

14

b)

7

c)

15

d)

18

66.

What is a coefficient?

a)

The small number on the right of the chemical symbol.

b)

The large number to the left of a formula.

67.

Which side of a chemical equation is the product side?

a)

Left (before the arrow)

b)

Right (after the arrow)

68.

Which side of a chemical equation is the reactant side?

a)

Left (before the arrow)

b)

Right (after the arrow)

69.

Which problem is balanced?

a)

PbO₂ + 2H₂

b)

SO₂ + H₂0 --> H₂SO₄

c)

2Na + 2H₂O --> 2NaOH + H₂

70.

What is the little number after an element in a chemical equation called.
Example: H₂

a)

Coefficient

b)

Subscript

c)

Atom

d)

Equation

71.

What is the arrow in a chemical equation...
H_{2 +}O --> H₂O

a)

Reactants

b)

Products

c)

Produces

d)

Chemical Equation

72.

Balance this equation
_Zn+_HCl-->_ZnCl₂+_H₂

a)

1,1,2,1

b)

1,1,1,2

c)

1,2,1,1

d)

2,1,1,1

73.

Balance this equation.
_Mg + _Cl₂--> _MgCl₂

a)

1, 2,1

b)

already balanced

c)

2,1,1

d)

1,1,2

74.

What does the Law of Conservation of Mass state?

a)

Matter cannot be gained or lost in a chemical reaction.

b)

Matter can only be lost in a chemical reaction.

c)

Matter can only be gained in a chemical reaction.

d)

Matter can be gained and lost in a chemical reaction.

75.

KNO₃ --> KNO₂ + O₂
What coefficients are needed to balance the reaction?

a)

2, 2, 1

b)

2, 3, 2

c)

1, 2, 2

d)

1, 3, 1

76.

Balance this equation-
__P₄+ __O₂--> __P₂O₃

a)

it is already balanced

b)

2, 1, 3

c)

1, 2, 3

d)

1, 3, 2

77.

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂--> 2Al₂O₃

a)

2

b)

6

c)

1

d)

4

78.

When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced

a)

charge

b)

subscript

c)

random number

d)

coefficient

79.

How many atoms are there TOTAL in:
H₂SO₄

a)

6

b)

5

c)

7

d)

3

80.

Balance this equation.
_CH₄ + _O₂--> _CO₂+ _H₂O

a)

1,2,1,1

b)

2,1,2,1

c)

1,2,1,2

d)

0,2,0,2

81.

What group in the periodic table are the alkali metals found?

a)

I

b)

II

c)

III

d)

VII

82.

Which of the following elements is a metalloid?

a)

Nitrogen

b)

Carbon

c)

Aluminium

d)

Silicon

83.

What is the chemical symbol for potassium

a)

P

b)

K

c)

Po

d)

Pt

84.

The atomic radius increases....

a)

across a period

b)

down a group

c)

diagonally up towards the top right hand side of the periodic table

d)

occasionally depending on the conditions of the element

85.

What element in the periodic table has the largest atomic radius?

a)

Caesium

b)

Francium

c)

Radon

d)

Thorium

86.

What is electronegativity?

a)

The negative charge on an atom

b)

The "electron pulling" power of an ion

c)

The measure of the "electron pulling" power of an atom towards another atoms electrons

d)

The total negative charge of the electrons in an neutral atom

87.

What is a cation?

a)

An ion

b)

A negative ion

c)

A positive ion

d)

An atom that has gained electrons

88.

Which of the following species has delocalised electrons?

a)

FeO

b)

O₂

c)

NO₃^-

d)

Fe

89.

Which of the following substances would be malleable, ductile and be a good conductor of electricity?

a)

Copper chloride

b)

Chlorine

c)

Copper

d)

Silicon dioxide

90.

Choose all of the substances that would be good conductors of electricity.

a)

Mg _(s)

b)

NaF _(s)

c)

MgCO_{3 (aq)}

d)

CO₂ _(g)

91.

What is the correct formula for the chromate ion?

a)

C₂O₄ ^2-

b)

CrO₄ ^2-

c)

Cr₂O₇ ^2-

d)

CrO₂ ²-

92.

Which of the following species shows the ammonium ion?

a)

NH₃

b)

NH₃ ⁺

c)

NH₄

d)

NH₄ ⁺

93.

What is the formula of manganese (II) oxide

a)

MgO

b)

MnO

c)

MgO2

d)

Mn₂O

94.

What is the correct name for FeCl₃?

a)

Iron chloride

b)

Iron trichloride

c)

Iron (III) chloride

d)

Fluorine trichloride

95.

What is the correct name for the following substance: P₄S₅?

a)

Phosphorus pentasulfide

b)

Tetraphosphorus pentasulfide

c)

Tetraphosphorus pentasulfur

d)

Phosphorus sulfide

96.

An atom is made up

a)

little particles

b)

protons, neutrons and electrons

c)

protons, nucleus and electrodes

d)

positive, neutral and negative

97.

Which of the following is not an example of a chemical reaction

a)

burning of wood

b)

freezing of water

c)

rotting of fruit

d)

explosion of dynamite

98.

What two products are usually produced from a combustion reaction?

a)

a chemical salt and hydrogen gas

b)

oxygen gas and a cloudy liquid

c)

water vapour and carbon dioxide gas

d)

carbon dioxide and smoke

99.

What is not an indication of a chemical change?

a)

smell produced

b)

heat produced

c)

solid produced

d)

melting

100.

Name the elements in
NaHCO₃

a)

sodium, hydrogen, carbon, oxygen

b)

sulfur, hydrogen, cobolt

c)

sodium, hydrogen, cobolt

d)

sulfur, hydrogen, carbon trioxide

101.

The chemical formula for sulfuric acid is H₂SO₄How many atoms are present?

a)

3

b)

6

c)

7

d)

10

102.

The atomic number of an element tells you

a)

how many protons and neutrons it has

b)

how many protons and electrons it has

c)

its place on the periodic table

d)

the mass of the nucleus

103.

The mass of an atoms nucleus is the sum of

a)

protons + neutrons

b)

electrons + neutrons

c)

electrons + protons

104.

The attraction forces between atoms are called

a)

particles

b)

joins

c)

shells

d)

bonds

105.

Methane burning in oxygen is an example of

a)

photosynthesis

b)

combustion

c)

decomposition

d)

neutralisation

106.

The amount of reactants should equal the amount of products. This is the rule for

a)

chemical reactions

b)

acid base reactions

c)

conservation of mass

d)

neutralisation reactions

107.

pH stands for

a)

power of hydrogen

b)

percent of hydrogen

c)

possible hydrogen

d)

precipitation of hydrogen

108.

Acids have a high pH

a)

True

b)

False

109.

When you vomit it tastes sour because

a)

your stomach contains an acid

b)

your stomach contains an alkali

110.

Exothermic reactions

a)

happen on the outside

b)

take in heat

c)

give off heat

d)

happen on the inside

111.

A weak acid has

a)

produces lots of hydrogen gas

b)

produces a small amount of hydrogen gas

c)

has lots of water

d)

has little water

112.

Dilute acids and bases have

a)

lots of water mixed with them

b)

not very much water mixed with them

c)

lots of bubbles when metals are added

d)

strong acid

113.

Rainwater is naturally acidic because

a)

rain dissolves with carbon dioxide

b)

rain dissolves with oxygen

c)

rain dissolves with nitrogen

d)

rain dissolves with alkalis

114.

An alkali is

a)

An acid dissolve in water

b)

A base dissolved in water

c)

An example of stomach acid

d)

An example of cleaning products

115.

What is the name of the element with an atomic number of 3?

a)

Lithium

b)

Magnesium

c)

Sodium

d)

Potassium

116.

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

117.

Potential energy is associated with ---.

a)

speed

b)

position

c)

direction

d)

temperature

118.

Kinetic energy is associated with ---.

a)

speed

b)

position

c)

direction

d)

temperature

119.

A 40-kg person is climbing 3 m up a flight of stairs in 6 seconds. How much work did they do climbing the stairs?

a)

400 J

b)

1200 J

c)

200 J

d)

120 J

120.

A 40-kg person is climbing 3 m up a flight of stairs in 6 seconds. How much power did they exert climbing the stairs?

a)

400 W

b)

1200 W

c)

200 W

d)

120 W

121.

How high up is a 3200-kg plane if it has 960000 J of potential energy?

a)

10 m

b)

30 m

c)

307200000 m

d)

300 m

122.

If a 1300-kg car has been lifted so it has 19500 J of potential energy, it was lifted up ---.

a)

1.5 m

b)

150 m

c)

15 m

d)

0.67 m

123.

How does conservation of energy explain why something that is falling should speed up?

a)

It gains kinetic energy because it gains potential energy.

b)

It loses kinetic energy because no work was done on it.

c)

It gains kinetic energy because it loses potential energy.

d)

It loses kinetic energy because the Earth gains potential energy.

124.

What is being transferred as you do work?

a)

Energy

b)

Heat

c)

Power

d)

Gravitational Potential Energy

125.

How do you calculate power?

a)

P = W/t

b)

P = E/t

c)

P = w * t

d)

P = bbq/chicken

126.

How do we calculate work?

a)

W = F * d

b)

w = f * D

c)

W = F * D

d)

w = f * d

127.

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

128.

The SI unit of work is?

a)

Joules

b)

Watts

c)

Newtons

d)

meters

129.

The energy of movement is...?

a)

Kinetic

b)

Potential

130.

Energy that is stored is called...

a)

Kinetic

b)

Potential

131.

The SI unit for power is...?

a)

Watts

b)

Joules

c)

Newtons

d)

Meters

132.

The measure of hotness or coldness is (a) .

temperature or heat

133.

__________is the form of energy that is transferred between objects that are different temperatures.

Heat or Temperature

a)

Heat

b)

Temperature

134.

Thermal energy or heat energy moves from objects that are warmer to objects that are ___________.

colder or hotter

a)

colder

b)

hotter

135.

Radiation, conduction, and convection are three ways that heat is transferred or moves.

True or False

a)

false

b)

true

136.

__________is heat transfer or movement by direct contact and usually is through solids.

conduction or convection

a)

Conduction

b)

Convection

137.

Heat that is transferred or moved in circle currents through liquids or gases is __________________.

radiation or convection

a)

radiation

b)

convection

138.

In convection currents, cold air rises and hot air sinks.

True or false

a)

true

b)

false

139.

Heat from a lamp is an example of _____________.

radiation, convection or conduction

a)

radiation

b)

convection

c)

conduction

140.

Cooking pancakes in a skillet is as example of _____________.

radiation, conduction, convection

a)

radiation

b)

conduction

c)

convection

141.

The water in a lake is warmer on top than the water at the bottom of the lake. That is an example of _____________.

radiation, conduction, convection

a)

radiation

b)

conduction

c)

convection

142.

What are the three main scales of measuring heat?

a)

Kelvin

b)

Celsius

c)

Mercury

d)

Fahrenheit

143.

We can measure temperature using a...

a)

Microwave

b)

Thermometer

c)

Person

d)

Oven

144.

TRUE or FALSE: Heat and Temperature are the same thing.

a)

True

b)

False

145.

Heat is?

a)

The amount of matter in an object

b)

moving particles that change objects cold

c)

The average

d)

The movement of thermal energy in an object

146.

Mass is?

a)

The amount of matter in an object

b)

Increased kinetic energy

c)

Stored energy

d)

The amount of space something takes up

147.

At what temperature do all molecules stop moving?

a)

Absolute zero

b)

Negative thirty

c)

Zero degrees

d)

Positive twenty

148.

Which thermometers temperature is about 25° Celcius?

a)

Blue

b)

Green

c)

Blue

d)

Blue and Green

149.

What is the temperature on this thermometer?

a)

85° Fahrenheit

b)

80° Fahrenheit

c)

90° Fahrenheit

d)

95° Fahrenheit

150.

Boiling Water

a)

Conduction

b)

Convection

c)

Radiation

151.

Weather Patterns

a)

Conduction

b)

Convection

c)

Radiation

152.

Sun Bathing

a)

Conduction

b)

Convection

c)

Radiation

153.

A metal rod of length 40.00 cm at 20⁰C is heated to a temperature of 45⁰C. If the new length of the rod is 40.05 cm, calculate its linear expansivity.

a)

1.2 x 10^-5K^-1

b)

2.5 x 10^-5K^-1

c)

3.5 x 10^-5K^-1

d)

5.0 x 10^-5 K^-1

154.

Steel bars, each of length 3.0 m at 28⁰C, are to be used for constructing a rail line. If the linear expansivity of steel is 1.0 x 10^-5 K^-1, what is the safety gap that must be left between successive bars if the highest temperature expected is 40⁰C ?

a)

1.2 x 10^-1cm

b)

8.4 x 10^-2cm

c)

3.6 x 10^-2cm

d)

1.8 x 10^-2cm

155.

A wire, 20 m long, is heated from a temperature of 5⁰C to 55⁰C. If the change in length is 0.020 m, calculate the linear expansivity of the wire.

a)

1.0 x 10^-3 K^-1

b)

2.0 x 10^-4K^-1

c)

2.0 x 10^-5 K^-1

d)

2.0 x 10^-6K^-1

156.

A brass rod is 2m long at a certain temperature. Calculate the linear expansion of the rod for a temperature change of 100 K. (Linear expansivity of brass = 1.8 x 10^-5K^-1)

a)

0.3600 m

b)

0.1800 m

c)

0.0360 m

d)

0.0036 m

157.

A wire, 20 m long, is heated from a temperature of 5⁰C to 55⁰C. If the change in length is 0.020 m, calculate the linear expansivity of the wire.

a)

1.0 x 10^-3 K^-1

b)

2.0 x 10^-4K^-1

c)

2.0 x 10^-5 K^-1

d)

2.0 x 10^-6K^-1

158.

Steel bars, each of length 3.0 m at 28⁰C, are to be used for constructing a rail line. If the linear expansivity of steel is 1.0 x 10^-5 K^-1, what is the safety gap that must be left between successive bars if the highest temperature expected is 40⁰C ?

a)

1.2 x 10^-1cm

b)

8.4 x 10^-2cm

c)

3.6 x 10^-2cm

d)

1.8 x 10^-2cm

159.

An iron rod of length 50 m and at a temperature of 60⁰C is heated to 70⁰C. Calculate its new length.

(Linear expansivity of iron = 1.2 x 10^-5K^-1)

a)

50.006 m

b)

50.060 m

c)

51.600 m

d)

51.200 m

160.

Steel bars, each of length 3.0 m at 28⁰C, are to be used for constructing a rail line. If the linear expansivity of steel is 1.0 x 10^-5 K^-1, what is the safety gap that must be left between successive bars if the highest temperature expected is 40⁰C ?

a)

1.2 x 10^-1cm

b)

8.4 x 10^-2cm

c)

3.6 x 10^-2cm

d)

1.8 x 10^-2cm

161.

True or False: The density of a specific type of material never changes.

a)

True

b)

False

162.

Frank has a paper clip. It has a mass of 9g and a volume of 3cm³. What is its density?

a)

3 g/cm³

b)

1/3 g/cm³

c)

27 g/cm³

d)

39 g/cm³

163.

An iron rod of length 50 m and at a temperature of 60⁰C is heated to 70⁰C. Calculate its new length.

(Linear expansivity of iron = 1.2 x 10^-5K^-1)

a)

50.006 m

b)

50.060 m

c)

51.600 m

d)

51.200 m

164.

A brass rod is 2m long at a certain temperature. Calculate the linear expansion of the rod for a temperature change of 100 K. (Linear expansivity of brass = 1.8 x 10^-5K^-1)

a)

0.3600 m

b)

0.1800 m

c)

0.0360 m

d)

0.0036 m

165.

A metal rod of length 40.00 cm at 20⁰C is heated to a temperature of 45⁰C. If the new length of the rod is 40.05 cm, calculate its linear expansivity.

a)

1.2 x 10^-5K^-1

b)

2.5 x 10^-5K^-1

c)

3.5 x 10^-5K^-1

d)

5.0 x 10^-5 K^-1

166.

Steel bars, each of length 3.0 m at 28⁰C, are to be used for constructing a rail line. If the linear expansivity of steel is 1.0 x 10^-5 K^-1, what is the safety gap that must be left between successive bars if the highest temperature expected is 40⁰C ?

a)

1.2 x 10^-1cm

b)

8.4 x 10^-2cm

c)

3.6 x 10^-2cm

d)

1.8 x 10^-2cm

167.

A wire, 20 m long, is heated from a temperature of 5⁰C to 55⁰C. If the change in length is 0.020 m, calculate the linear expansivity of the wire.

a)

1.0 x 10^-3 K^-1

b)

2.0 x 10^-4K^-1

c)

2.0 x 10^-5 K^-1

d)

2.0 x 10^-6K^-1

168.

The transfer of thermal energy between objects of different temperatures is called...

a)

temperature

b)

heat

c)

none of these

169.

The faster an object moves, the ________ kinetic energy it has.

a)

more

b)

less

c)

none of the above

d)

all of the above

170.

A jacket is a good example of an . . .

a)

Insulator

b)

Investigator

c)

Insider

d)

Interrogator

171.

What is the BEST example of a conductor?

a)

A wooden block

b)

A ceramic mug

c)

A glass cup

d)

A metal bowl

172.

The heat from a lamp allows a lizard to remain warm. This is an example of which type of heat transfer?

a)

radiation

b)

conduction

c)

convection

d)

insulation

173.

What is the definition of CONDUCTION?

a)

When heat is transferred from objects like rays of light or electromagnetically.

b)

a hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.

c)

When heat transfers from objects that are touching.

d)

When heat transfers through the heater or AC in your house.

174.

An iron rod of length 50 m and at a temperature of 60⁰C is heated to 70⁰C. Calculate its new length.

(Linear expansivity of iron = 1.2 x 10^-5K^-1)

a)

50.006 m

b)

50.060 m

c)

51.600 m

d)

51.200 m

175.

A brass rod is 2m long at a certain temperature. Calculate the linear expansion of the rod for a temperature change of 100 K. (Linear expansivity of brass = 1.8 x 10^-5K^-1)

a)

0.3600 m

b)

0.1800 m

c)

0.0360 m

d)

0.0036 m

176.

A metal rod of length 40.00 cm at 20⁰C is heated to a temperature of 45⁰C. If the new length of the rod is 40.05 cm, calculate its linear expansivity.

a)

1.2 x 10^-5K^-1

b)

2.5 x 10^-5K^-1

c)

3.5 x 10^-5K^-1

d)

5.0 x 10^-5 K^-1

177.

Steel bars, each of length 3.0 m at 28⁰C, are to be used for constructing a rail line. If the linear expansivity of steel is 1.0 x 10^-5 K^-1, what is the safety gap that must be left between successive bars if the highest temperature expected is 40⁰C ?

a)

1.2 x 10^-1cm

b)

8.4 x 10^-2cm

c)

3.6 x 10^-2cm

d)

1.8 x 10^-2cm

178.

A wire, 20 m long, is heated from a temperature of 5⁰C to 55⁰C. If the change in length is 0.020 m, calculate the linear expansivity of the wire.

a)

1.0 x 10^-3 K^-1

b)

2.0 x 10^-4K^-1

c)

2.0 x 10^-5 K^-1

d)

2.0 x 10^-6K^-1

179.

A brass rod is 2m long at a certain temperature. Calculate the linear expansion of the rod for a temperature change of 100 K. (Linear expansivity of brass = 1.8 x 10^-5K^-1)

a)

0.3600 m

b)

0.1800 m

c)

0.0360 m

d)

0.0036 m

180.

A wire, 20 m long, is heated from a temperature of 5⁰C to 55⁰C. If the change in length is 0.020 m, calculate the linear expansivity of the wire.

a)

1.0 x 10^-3 K^-1

b)

2.0 x 10^-4K^-1

c)

2.0 x 10^-5 K^-1

d)

2.0 x 10^-6K^-1

181.

A metal rod of length 40.00 cm at 20⁰C is heated to a temperature of 45⁰C. If the new length of the rod is 40.05 cm, calculate its linear expansivity.

a)

1.2 x 10^-5K^-1

b)

2.5 x 10^-5K^-1

c)

3.5 x 10^-5K^-1

d)

5.0 x 10^-5 K^-1

182.

Steel bars, each of length 3.0 m at 28⁰C, are to be used for constructing a rail line. If the linear expansivity of steel is 1.0 x 10^-5 K^-1, what is the safety gap that must be left between successive bars if the highest temperature expected is 40⁰C ?

a)

1.2 x 10^-1cm

b)

8.4 x 10^-2cm

c)

3.6 x 10^-2cm

d)

1.8 x 10^-2cm

183.

Chlorine boils at 239 K. What is the boiling point of chlorine expressed in degrees Celsius?

a)

93 degrees Celsius

b)

34 degrees Celsius

c)

-61 degrees Celsius

d)

-34 degrees Celsius

184.

Which temperature scale has no negative temperatures?

a)

Celsius

b)

Fahrenheit

c)

Joule

d)

Kelvin

185.

Device/Object that measures temperature.

a)

Thermal energy

b)

Temperature

c)

Thermometer

d)

Heat

186.

This happens to water at 0 degrees Celsius.

a)

Boils

b)

Freezes

c)

Heats

d)

All of them

187.

This happens to water at 100 degrees Celsius.

a)

Boils

b)

Freezes

c)

Heats

d)

All of them

188.

A temperature scale that is used mostly in United States.
According to it, water freezes at 32 degrees and boils at 212 degrees.

a)

Celsius

b)

Fahrenheit

c)

Kelvin

d)

All of them

189.

Convert 35⁰F to Celsius

a)

1.6⁰

b)

1.7⁰C

c)

2.0⁰

d)

16.6⁰C

190.

Convert 72⁰F to Celsius

a)

2.2⁰C

b)

222⁰C

c)

22.2⁰C

d)

161.6⁰C

191.

Convert 30°C to Fahrenheit

a)

860°F

b)

86°F

c)

63.8°F

d)

56°F

192.

Convert: 186.5 K to C

a)

-86.4 C

b)

-50 C

c)

-68.4 C

d)

180 K

193.

The lower fixed and upper fixed point of a mercury - in – glass thermometer are marked Y and 180 mm respectively. On a particular day, the mercury meniscus rises to 45 mm. If the corresponding reading on a Celsius scale is 10 ^oC, calculate the value of Y.

a)

4mm

b)

18 mm

c)

30 mm

d)

135 mm.

194.

Which of the following properties is not considered in choosing mercury as a thermometric liquid?

a)

Density

b)

Expansivity

c)

Conductivity

d)

Capacity.

195.

Which of the following thermometers can be used to measure human body temperature?

a)

Constant volume gas thermometer

b)

Thermocouple thermometer

c)

Clinical thermometer

d)

Mercury-in-glass thermometer.

196.

A thermometer records 680mm Hg at steam point ad 440 mmHg at ice point. The temperature it records at 380 mmHg is

a)

-25 ^oC

b)

-20 ^oC

c)

20 ^oC

d)

25 ^oC

197.

A mercury-in-glass thermometer reads 4cm at ice point and 29cm at steam point. Calculate the temperature when the mercury level is at 9cm

a)

13⁰C

b)

20⁰C

c)

33⁰C

d)

38⁰C

198.

A centimeter scale is fixed next to an unmarked mercury-in-glass thermometer.

The ice point and the steam point are marked:

What is the temperature shown on the thermometer?

a)

44⁰C

b)

56⁰C

c)

60⁰C

d)

66⁰C

Science Pearlspedia Year 10

Total questions: 198

Worksheet time: 2hrs 16mins

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