Free Printable PS Midterm Review

1.

List the steps of the scientific method in order:

a)

question, research, hypothesis, experiment, analyze data, conclusion

b)

research, question, analyze data, experiment, hypothesis, conclusion

c)

experiment, analyze data, question, hypothesis, research, conclusion

d)

question, hypothesis, experiment, research, analyze data, conclusion

2.

the group that does not change in an experiment

a)

independent variable

b)

dependent variable

c)

control group

d)

constants

3.

all the parts of the experiment that stay the same

a)

independent variable

b)

dependent variable

c)

control group

d)

constants

4.

the part of the experiment that is changed

a)

independent variable

b)

dependent variable

c)

control group

d)

constants

5.

the part of the experiment that is measured

a)

independent variable

b)

dependent variable

c)

control group

d)

constants

6.

Six potato plants have been grown in good soil. They were given the right amount of water and 12 hours of sunlight every day. Then, three of the potato plants were put into complete darkness. The height of the plants was measured weekly. What is the INDEPENDENT variable?

a)

the height of the plants

b)

the amount of sunlight

c)

the amount of water

d)

the type of soil

7.

Six potato plants have been grown in good soil. They were given the right amount of water and 12 hours of sunlight every day. Then, three of the potato plants were put into complete darkness. The height of the plants was measured weekly. What is the DEPENDENT variable?

a)

the height of the plants

b)

the amount of sunlight

c)

the amount of water

d)

the type of soil

e)

the plants that were not put in darkness

8.

Six potato plants have been grown in good soil. They were given the right amount of water and 12 hours of sunlight every day. Then, three of the potato plants were put into complete darkness. The height of the plants was measured weekly. What is the CONTROL GROUP?

a)

the height of the plants

b)

the amount of sunlight

c)

the amount of water

d)

the type of soil

e)

the plants that were not put in darkness

9.

Six potato plants have been grown in good soil. They were given the right amount of water and 12 hours of sunlight every day. Then, three of the potato plants were put into complete darkness. The height of the plants was measured weekly. What are TWO CONSTANTS?

a)

the height of the plants

b)

the amount of sunlight

c)

the amount of water

d)

the type of soil

e)

the plants that were not put in darkness

10.

Use the graph. What is the independent variable?

a)

the object that is rolling, height of inclined plane, length of start to finish

b)

type of surface

c)

amount of time

11.

Use the graph. What is the dependent variable?

a)

the object that is rolling, height of inclined plane, length of start to finish

b)

type of surface

c)

amount of time

12.

Use the graph. What is the constants?

a)

the object that is rolling, height of inclined plane, length of start to finish

b)

type of surface

c)

amount of time

13.

According to the information in the graph, which of these is a valid conclusion?

a)

The amount of water vapor in the air decreases as temperature increases.

b)

The amount of water vapor in the air is unaffected by temperature.

c)

The amount of water vapor is affected only by temperature.

d)

The amount of water vapor in the air increases as temperature increases.

14.

meter

a)

base unit for mass

b)

base unit for volume

c)

base unit for length

d)

base unit for density

15.

liter

a)

base unit for mass

b)

base unit for volume

c)

base unit for length

d)

base unit for density

16.

gram

a)

base unit for mass

b)

base unit for volume

c)

base unit for length

d)

base unit for density

17.

distance

a)

length

b)

volume

c)

mass

18.

amount of space an object takes up

a)

length

b)

volume

c)

mass

19.

amount of matter in an object

a)

length

b)

volume

c)

mass

20.

Convert: 85 cm = ____ m

a)

8500

b)

0.85

c)

8.5

d)

.085

21.

Convert: 73.5 mL = ____ L

a)

73500

b)

735

c)

0.0735

d)

0.735

22.

Convert: 1.5 kg = ____ g

a)

0.155

b)

1500

c)

0.000155

d)

150

23.

What is the volume of the liquid in the graduated cylinder?

a)

15.5

b)

16

c)

17

d)

24

24.

The volume of liquid in a graduated cylinder is 2 mL. You drop a marble into the graduated cylinder and record the new volume as 3.5 mL. What is the volume of the marble?

a)

3.5 ml

b)

2 ml

c)

5.5 ml

d)

1.5 ml

25.

Density = Mass/Volume

The mass of a metal block is 15 g, and has a volume of 7.5 cm3. What is the density?

a)

2 g/cm3

b)

15 g/cm3

c)

2 g

d)

15 g

26.

If an object has a density of 2 g/cm3, will it sink in water? Hint: density of water is 1 g/ml

a)

yes, because its density is greater than water's density

b)

no, because its density is less than water's density

c)

no, because its density is greater than water's density

d)

yes, because its density is less than water's density

27.

Use the graph. What is the density of gold?

a)

20 g/cm3

b)

0.5 g/cm3

c)

15 g/cm3

d)

40 g/cm3

28.

Which THREE choices are NOT part of the metric system?

a)

centimeters

b)

inches

c)

milliliters

d)

yards

e)

feet

29.

anything that has mass and takes up space

a)

density

b)

inches

c)

matter

d)

kinetic energy

30.

Which three things are matter?

a)

paper

b)

happiness

c)

air

d)

steam

e)

jealousy

31.

color

a)

chemical property

b)

physical property

32.

shape

a)

chemical property

b)

physical property

33.

flammability

a)

chemical property

b)

physical property

34.

melting point

a)

chemical property

b)

physical property

35.

solubility

a)

chemical property

b)

physical property

36.

reactivity

a)

chemical property

b)

physical property

37.

a change in the appearance of a substance without forming a new substance. Can usually be reversed.

a)

chemical change

b)

physical change

38.

a change which forms a new substance (has different chemical properties than it started with)

a)

chemical change

b)

physical change

39.

ripping paper

a)

physical change

b)

chemical change

40.

freezing

a)

physical change

b)

chemical change

41.

chewing

a)

physical change

b)

chemical change

42.

burning paper

a)

physical change

b)

chemical change

43.

reacting baking soda and acid

a)

physical change

b)

chemical change

44.

enzymes breaking down food (digestion)

a)

physical change

b)

chemical change

45.

dissolving

a)

physical change

b)

chemical change

46.

Which of the following is NOT evidence of a chemical change?

a)

permanent color change

b)

temperature change

c)

changing shape

d)

new odor

e)

formation of a gas (bubbles)

47.

What is another word for average kinetic energy?

a)

height

b)

electricity

c)

size

d)

temperature

48.

If you wanted to measure the average kinetic energy of a substance, which of the following would you do?

a)

measure the height

b)

measure the temperature

c)

measure the size

d)

measure the volume

49.

What happens to the kinetic energy of particles as temperature is increased?

a)

they move faster

b)

they move slower

c)

they are not affected by the temperature change

50.

definite shape and volume

a)

solid

b)

liquid

c)

gas

51.

no definite shape or volume

a)

solid

b)

liquid

c)

gas

52.

no definite shape,

definite volume

a)

solid

b)

liquid

c)

gas

53.

particles are far apart

a)

solid

b)

liquid

c)

gas

54.

particles are tightly packed

a)

solid

b)

liquid

c)

gas

55.

particles barely move/vibrate

a)

solid

b)

liquid

c)

gas

56.

particles glide and slide over each other

a)

solid

b)

liquid

c)

gas

57.

lowest amount of kinetic energy

a)

solid

b)

liquid

c)

gas

58.

highest amount of kinetic energy

a)

solid

b)

liquid

c)

gas

59.

slowest moving particles

a)

solid

b)

liquid

c)

gas

60.

fastest moving particles

a)

solid

b)

liquid

c)

gas

61.

highest density of particles

a)

solid

b)

liquid

c)

gas

62.

lowest density of particles

a)

solid

b)

liquid

c)

gas

63.

Matter cannot be created or destroyed.

a)

true

b)

false

64.

adding energy

a)

endothermic

b)

exothermic

65.

what happens to the temperature of the system during an endothermic process?

a)

temperature increases

b)

temperature decreases

66.

releasing energy

a)

endothermic

b)

exothermic

67.

what happens to the temperature of the system during an exothermic process?

a)

temperature increases

b)

temperature decreases

68.

melting

a)

endothermic

b)

exothermic

69.

freezing

a)

endothermic

b)

exothermic

70.

vaporization

a)

endothermic

b)

exothermic

71.

condensation

a)

endothermic

b)

exothermic

72.

sublimation

a)

endothermic

b)

exothermic

73.

deposition

a)

endothermic

b)

exothermic

74.

solid to liquid

a)

melting

b)

freezing

c)

condensation

d)

vaporization

e)

sublimation

75.

liquid to solid

a)

melting

b)

freezing

c)

condensation

d)

vaporization

e)

sublimation

76.

solid to gas

a)

melting

b)

freezing

c)

condensation

d)

vaporization

e)

sublimation

77.

liquid to gas

a)

melting

b)

freezing

c)

condensation

d)

vaporization

e)

deposition

78.

gas to liquid

a)

melting

b)

freezing

c)

condensation

d)

vaporization

e)

deposition

79.

The graph shows the heating curve of a substance. What is happening at A?

a)

solid

b)

liquid

c)

gas

d)

melting/freezing

e)

vaporization/condensation

80.

The graph shows the heating curve of a substance. What is happening at B?

a)

solid

b)

liquid

c)

gas

d)

melting/freezing

e)

vaporization/condensation

81.

The graph shows the heating curve of a substance. What is happening at C?

a)

solid

b)

liquid

c)

gas

d)

melting/freezing

e)

vaporization/condensation

82.

The graph shows the heating curve of a substance. What is happening at D?

a)

solid

b)

liquid

c)

gas

d)

melting/freezing

e)

vaporization/condensation

83.

The graph shows the heating curve of a substance. What is happening at E?

a)

solid

b)

liquid

c)

gas

d)

melting/freezing

e)

vaporization/condensation

84.

Can be separate by physical means

a)

element

b)

compound

c)

mixture

85.

Made up of only one kind of atom (O₂)

a)

element

b)

compound

c)

mixture

86.

Formed when two or more elements chemically combine

a)

element

b)

compound

c)

mixture

87.

cannot be separated physically, but can be separated chemically

a)

element

b)

compound

c)

mixture

88.

oxygen

a)

element

b)

compound

c)

mixture

89.

air

a)

element

b)

compound

c)

mixture

90.

peanut butter

a)

element

b)

compound

c)

mixture

91.

water (H₂0)

a)

element

b)

compound

c)

mixture

92.

sugar water

a)

homogeneous mixture

b)

heterogeneous mixture

93.

fruit salad

a)

homogeneous mixture

b)

heterogeneous mixture

94.

kool-aid

a)

homogeneous mixture

b)

heterogeneous mixture

95.

sand

a)

homogeneous mixture

b)

heterogeneous mixture

96.

True/False: You can separate a mixture by using a magnet, filtration, and evaporation.

a)

true

b)

false

97.

Homogeneous mixtures are called solutions.

a)

true

b)

false

98.

a substance whose particles are dissolved in a solution

a)

solute

b)

solvent

99.

a substance in which a solute dissolves

a)

solute

b)

solvent

100.

In a salt water solution, water is the

a)

solute

b)

solvent

101.

In a salt water solution, salt is the

a)

solute

b)

solvent

102.

True/false: Decreasing the temperature of the solution can make a substance dissolve faster.

a)

true

b)

false

103.

the atom is a solid sphere that cannot be divided

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

e)

Electron Cloud model

104.

gold foil experiment, discovered the nucleus

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

e)

Electron Cloud model

105.

electrons move around nucleus on fixed paths

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

e)

Electron Cloud model

106.

our current model which shows where electrons are likely to be found

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

e)

Electron Cloud model

107.

chocolate chip cookie model,

discovered subatomic particles

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

e)

Electron Cloud model

108.

What's the charge:

proton

a)

positive

b)

negative

c)

neutral/no charge

109.

What's the charge:

neutron

a)

positive

b)

negative

c)

neutral/no charge

110.

What's the charge:

electron

a)

positive

b)

negative

c)

neutral/no charge

111.

What's the charge:

the nucleus

a)

positive

b)

negative

c)

neutral/no charge

112.

What's the charge:

an atom

a)

positive

b)

negative

c)

neutral/no charge

113.

What's the charge:

an ion

(there's 2 right answers!)

a)

positive

b)

negative

c)

neutral/no charge

114.

Where is it located?

protons

a)

in the nucleus

b)

outside the nucleus

115.

Where is it located?

neutrons

a)

in the nucleus

b)

outside the nucleus

116.

Where is it located?

electrons

a)

in the nucleus

b)

outside the nucleus

117.

atomic number =

the number of _______ or _______

a)

protons

b)

neutrons

c)

electrons

118.

mass number =

the number of _______ + ________

a)

protons

b)

neutrons

c)

electrons

119.

which 2 subatomic particles have similar masses?

a)

protons

b)

neutrons

c)

electrons

120.

mass # - protons = ______

a)

protons

b)

neutrons

c)

electrons

121.

Thallium:

Atomic number?

a)

204

b)

81

c)

123

d)

72

122.

Thallium:

# of protons?

a)

204

b)

81

c)

123

d)

72

123.

Thallium:

# of electrons?

a)

204

b)

81

c)

123

d)

72

124.

Thallium:

# of neutrons?

a)

204

b)

81

c)

123

d)

72

125.

Thallium:

atomic mass?

a)

204

b)

81

c)

123

d)

72

126.

Fluorine:

symbol?

a)

Fl

b)

F

127.

Fluorine:

atomic #?

a)

19

b)

10

c)

9

d)

7

128.

Fluorine:

# of protons?

a)

19

b)

10

c)

9

d)

7

129.

Fluorine:

# of electrons?

a)

19

b)

10

c)

9

d)

7

130.

Fluorine:

# of neutrons?

a)

19

b)

10

c)

9

d)

7

131.

Fluorine:

atomic mass?

a)

19

b)

10

c)

9

d)

7

132.

Fluorine:

# of valence electrons?

a)

19

b)

10

c)

9

d)

7

133.

Potassium:

Symbol?

a)

K

b)

P

c)

Po

d)

Pt

134.

Potassium:

atomic number?

a)

19

b)

1

c)

20

d)

15

e)

39

135.

Potassium:

# of protons?

a)

19

b)

1

c)

20

d)

15

e)

39

136.

Potassium:

# of electrons?

a)

19

b)

1

c)

20

d)

15

e)

39

137.

Potassium:

# of neutrons?

a)

19

b)

1

c)

20

d)

15

e)

39

138.

Potassium:

atomic mass?

a)

19

b)

1

c)

20

d)

15

e)

39

139.

Potassium:

# of valence electrons?

a)

19

b)

1

c)

20

d)

15

e)

39

140.

How many neutrons does carbon-13 have?

a)

13

b)

6

c)

7

d)

4

141.

Isotopes are atoms of the same element with a different number of

a)

neutrons

b)

protons

c)

electrons

d)

atomic #

142.

U-238 has how many...

protons?

a)

238

b)

146

c)

92

143.

U-238 has how many...

electrons?

a)

238

b)

146

c)

92

144.

U-238 has how many...

neutrons?

a)

238

b)

146

c)

92

145.

U-235 has how many...

protons?

a)

235

b)

143

c)

146

d)

92

146.

U-235 has how many...

electrons?

a)

235

b)

143

c)

146

d)

92

147.

U-235 has how many...

neutrons?

a)

235

b)

143

c)

146

d)

92

148.

Isotopes always have the same number of

a)

electrons

b)

neutrons

c)

protons

149.

When drawing Bohr models, what particle is on the energy levels?

a)

neutrons

b)

electrons

c)

protons

150.

How many electrons can each level hold?

1st shell - ______

2nd shell - ______

3rd shell - ______

a)

2, 8, 8

b)

8, 8, 8

c)

1, 8, 2

d)

none of the above

151.

The nucleus of an atom is

a)

dense

b)

mostly empty space

152.

The nucleus of an atom is

a)

negatively charged

b)

positively charged

153.

How many atoms of each in NaCl? Choose 2!

a)

sodium = 1

b)

sodium = 2

c)

chlorine = 1

d)

chlorine = 2

154.

How many atoms of each in 3H₂SO₄? Choose 3!

a)

hydrogen = 5

b)

hydrogen = 6

c)

sulfur = 3

d)

sulfur = 1

e)

oxygen = 12

155.

Which element does this Bohr diagram represent?

a)

beryllium

b)

silicon

c)

lithium

d)

sodium

156.

Which element does this Bohr diagram represent?

a)

beryllium

b)

silicon

c)

lithium

d)

sodium

157.

Which element does this Bohr diagram represent?

a)

beryllium

b)

silicon

c)

lithium

d)

sodium

158.

How many valence electrons does lithium have?

a)

1

b)

2

c)

3

d)

4

159.

How many valence electrons does silicon have?

a)

1

b)

2

c)

3

d)

4

160.

How many valence electrons does beryllium have?

a)

1

b)

2

c)

3

d)

4

161.

Which diagram shows the correct Bohr diagram for sulfur?

a)

b)

c)

d)

162.

How many valence electrons does sulfur have?

a)

2

b)

3

c)

4

d)

5

e)

6

163.

Who organized the first periodic table?

a)

Bohr

b)

Mendeleev

c)

Rutherford

d)

Dalton

164.

How was the FIRST periodic table arranged?

a)

by increasing atomic number

b)

by increasing atomic mass

c)

by the number of electrons

d)

by the number of neutrons

165.

How many periods are in the periodic table?

How many groups?

a)

18, 7

b)

7, 18

c)

9, 18

d)

18, 9

e)

10, 10

166.

Elements that have similar properties are in the same

a)

period

b)

group

167.

Which element is most similar to boron?

a)

carbon

b)

silicon

c)

oxygen

d)

aluminum

168.

What element is in period 3, group 15?

a)

thallium

b)

iron

c)

phosphorus

d)

magnesium

169.

What element is in group 2, period 6?

a)

oxygen

b)

barium

c)

aluminum

d)

argon

170.

Elements in the same group have the same number of

a)

protons

b)

neutrons

c)

electrons

d)

valence electrons

171.

How many valence electrons does aluminum have?

a)

2

b)

3

c)

6

d)

7

172.

How many valence electrons does helium have?

a)

2

b)

3

c)

6

d)

7

173.

How many valence electrons does oxygen have?

a)

2

b)

3

c)

6

d)

7

174.

How many valence electrons does fluorine have?

a)

2

b)

3

c)

6

d)

7

175.

majority of elements on the periodic table

a)

metal

b)

nonmetal

c)

metalloid

176.

semiconductor

a)

metal

b)

nonmetal

c)

metalloid

177.

solid at room temperature

a)

metal

b)

nonmetal

c)

metalloid

178.

most are gases at room temperature

a)

metal

b)

nonmetal

c)

metalloid

179.

located on the zigzag

a)

metal

b)

nonmetal

c)

metalloid

180.

good conductor

a)

metal

b)

nonmetal

c)

metalloid

181.

shiny

a)

metal

b)

nonmetal

c)

metalloid

182.

malleable

a)

metal

b)

nonmetal

183.

neon

a)

metal

b)

nonmetal

c)

metalloid

184.

calcium

a)

metal

b)

nonmetal

c)

metalloid

185.

Group 1 (1A)

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

186.

Group 2 (2A)

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

187.

Group 17 (7A)

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

188.

Group 18 (8A)

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

189.

Most unreactive (stable) group

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

190.

Most reactive group of metals

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

191.

Most reactive group of nonmetals

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

192.

electrons are transferred

a)

ionic

b)

covalent

193.

electrons are shared

a)

ionic

b)

covalent

194.

occurs between metal and nonmetal

a)

ionic

b)

covalent

195.

occurs between nonmetal and nonmetal

a)

ionic

b)

covalent

196.

formed between Na and Cl

a)

ionic

b)

covalent

197.

formed between two oxygen atoms

a)

ionic

b)

covalent

198.

named given to an atom with a positive charge

a)

anion

b)

cation

199.

named given to an atom with a negative charge

a)

anion

b)

cation

200.

What group of elements does not form bonds and why?

a)

halogens, because their outer shell is already filled

b)

noble gases, because their outer shell is already filled

c)

alkali metals, because they only have 1 valence electron

d)

alkaline earth metals, because they only need 6 more valence electrons

PS Midterm Review

Total questions: 200

Worksheet time: 50mins

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