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physical science unit 2 review

Total questions: 99

Worksheet time: 2hrs 48mins

Name
Class
Date
1.

How would you classify this image?

a)

homogeneous mixture

b)

heterogeneous mixture

2.

How would you classify this image?

a)

homogeneous mixture

b)

heterogeneous mixture

3.

What is a pure substance made of 2 or more elements chemically combined in a specific ratio (Ex. Water)?

a)

Element

b)

Compound

c)

Mixture

d)

Solution

4.

What is a type of mixture in which different parts can easily be seen (Ex. Vegetable soup)?

a)

Heterogeneous mixture

b)

Homogeneous mixture

c)

Solution

d)

Colloid

5.

What is a well-mixed mixture containing a solvent and at least one solute that has the same properties throughout (Ex. Sugar water)?

a)

Heterogeneous mixture

b)

Colloid

c)

Suspension

d)

Solution

6.

What is a type of mixture that is evenly mixed so you cannot see the parts and it looks all the same (Ex. Paint)

a)

Element

b)

Compound

c)

Heterogeneous mixture

d)

Homogeneous mixture

7.

What is a pure substance that cannot be broken down into any other substances by chemical or physical means (Ex. Oxygen)?

a)

Element

b)

Compound

c)

Colloid

d)

Suspension

8.

What is a mixture in which particles can be seen seen and settle out over time (Ex. Muddy water)?

a)

Solution

b)

Suspension

c)

Colloid

d)

Element

9.

What is a mixture containing small, undissolved particles that do not settle out over time (Ex. Fog)?

a)

Solution

b)

Suspension

c)

Colloid

d)

Compound

10.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
11.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
12.
Italian Salad Dressing is a . . .
a)
heterogeneous mixture
b)
homogeneous mixture
c)
Pure Substance
d)
Compound
13.
If you change a substance into a new substance...
a)
Partial Change
b)
Physical Change
c)
Chemical Change
d)
Freezing
14.
Changing the phase, size or shape of something....
a)
Chemical change
b)
Physical Change
c)
Suspension
d)
Colloid
15.
Which is NOT a chemical change?
a)
Leaves changing colors in the fall
b)
Iron rusting
c)
Digesting Lunch
d)
Ice Melting
16.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
17.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
18.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
19.

Freezing

a)

Solid to gas

b)

Liquid to solid

c)

Gas to solid

20.

Boiling

a)

liquid to gas

b)

gas to solid

c)

gas to liquid

21.
Which state of matter has a definite shape?
a)
solid
b)
liquid
c)
gas
22.

The state of matter that has no definite size or shape is

a)

Solid

b)

Liquid

c)

Gas

23.

Particles in a ______________________ move quickly and are far apart.

a)

gas

b)

solid

c)

liquid

24.

Solid to Gas

a)

Deposition

b)

Sublimation

c)

Evaporation

25.

The slower the particles in a substance move,

a)

the colder it is.

b)

the warmer it is.

c)

the more energy it has.

26.
The temperature of a substance increases as___.
a)
the substance expands
b)
the average kinetic energy of its particles increases
c)
the substance's volume increases
d)
the substance's mass increases
27.

Liquid to Gas

a)

Condensation

b)

Evaporation

c)

Sublimation

28.

Particles move relative to each other, but remain in contact with each other.

a)

solid

b)

liquid

c)

gas

29.

Basic state of matter with the greatest amount of energy.

a)

solid

b)

liquid

c)

gas

30.

What happens to particles when their temperature increases?

a)

The particles move slower

b)

The particles move faster

c)

The particles lose mass

d)

The particles gain mass

31.

The amount of space something takes up is its...

a)

Mass

b)

Volume

c)

Thermal Energy

d)

Temperature

32.

Blue color: Chemical or Physical Property

a)
Chemical Property
b)
Physical Property
33.
Density: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
34.
Flammability (burns): Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
35.

Reacts with acid: Chemical or Physical Property

a)
Chemical Property
b)
Physical Property
36.
Brittleness: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
37.

Sour taste: Chemical or Physical Property

a)
Chemical Property
b)
Physical Property
38.

Reacts with water: Chemical or Physical Property

a)
Chemical Property
b)
Physical Property
39.
Hardness: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
40.

Boiling point: Chemical or Physical Property

a)
Chemical Property
b)
Physical Property
41.
Luster: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
42.

Odour (smell): Chemical or Physical Property

a)
Chemical Property
b)
Physical Property
43.
Reacts with Air: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
44.

Which one of these is a chemical property?

a)

Melting point

b)

Boiling point

c)

Color

d)

Toxicity

45.
Physical properties are
a)

Properties that can be observed without changing the identity of the substance

b)

Properties that describe how a substance changes into a completely different substance

46.

A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred?

a)

The powder DISSOLVED in the water

b)

The water turned the COLOR yellow

c)

The bag's TEMPERATURE changed

d)

The STATE OF MATTER changed

47.

Which of the following options provides evidence of a CHEMICAL change?

a)

Wood is burned releasing ash and smoke

b)

Rocks separate when soil is sifted

c)

Water turns to ice when you put it in the freezer

d)

Salt dissolves in water

48.

Which of the following examples provides evidence of a PHYSICAL change?

a)

Wood is burned and releases ash and smoke

b)

Iron rusts over time

c)

When mixed, baking soda and vinegar form gas bubbles

d)

A piece of paper changes shape when you rip it up

49.

A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?

a)

Physical change

b)

Chemical change

c)

No change

50.

Which observations prove a chemical change has occurred?

a)

Dissolving and expected color change

b)

Mixing and dissolving

c)

State of matter change and boiling water

d)

Unexpected temperature change

51.

When mixing milk and vinegar, a white, chunky, solid substance is formed. What has occurred?

a)

Physical change: state of matter

b)

Chemical change: production of a solid

c)

Physical change: freezing

d)

Chemical change: rust

52.

When iron is exposed to air over a long period of time, it forms rust. This is an example of what?

a)

A new substance forming

b)

Color change: no new substance

c)

Shape change: no new substance

d)

Burning: a new substance

53.

A physical change...

a)

Changes the physical properties of an object, but does not create a new substance.

b)

Creates a new substance and cannot be undone.

54.

A chemical change...

a)

Changes the physical properties of an object, but does not create a new substance.

b)

Creates a new substance and cannot be undone.

55.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

56.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

57.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

58.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

59.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

60.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

61.

Which of the following is NOT an example of chemical change?

a)

Milk turning sour

b)

Burning wood

c)

Breaking a pencil

d)

Metal turning rusty

62.
What line segment represents only the solid state?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
63.
What state(s) of matter are present at D-E?
a)
Solid-liquid
b)
Liquid
c)
Liquid-gas
d)
Gas-Solid
64.
True or false: melting and freezing occur at the same temperature!
a)
True
b)
False
c)
I don't know
65.
A substance's heating curve is shown in the graph.  What is its boiling point?
a)
100 C
b)
60 C
c)
80 C
d)
20 C
66.

The melting point of the sample is

a)

-60 ºC

b)

-100 ºC

c)

60 ºC

d)

100 ºC

67.
Describe the substance between letters D and E. 
a)
Gas
b)
Liquid
c)
Melting
d)
Evaporating
68.
Between which points is the temperature of the substance remaining constant?
a)
A-B only. 
b)
A-B, C-D, E-F
c)
B-C only. 
d)
B-C, D-E
69.

Given the heating curve of a solid being heated at a constant rate, how much total time was required to boil this substance after it reached its melting point?

a)

3 minutes

b)

4 minutes

c)

10 minutes

d)

14 minutes

70.

What is chromatography?

a)

Separation method based on gravity

b)

Separation method based on polarity

c)

Extraction method

71.

Chromatography can be used for separation in lab and industry

a)

True

b)

False

72.

Q. 

ink can be separated by a method of --------------------------------------------

a)

distillation

b)

sedimentation

c)

chromatography

d)

filtration

73.

 

Two or more substances that are mixed together but not chemically combined create a...

a)

solvent

b)

compound

c)

mixture

74.

Filtration can be used to separate the atoms in a compound.

a)

TRUE

b)

FALSE

75.

Substances in a mixture can be separated by physical methods.

a)

TRUE

b)

FALSE

76.

This method separates substances due to differences in the sizes of their particles.

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

77.

Which method(s) separate substances based on them having different boiling points? (Select all that apply).

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

78.

Which method is this a picture of?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

79.

What is the formula for Density?

a)

Density * Volume

b)

Mass/Density

c)

Mass/Volume

80.

Jack has a rock. The rock has a mass of 14 g and a volume of 2 cm3. What is the density of the rock?

a)

7 g/cm3

b)

7 mL

c)

1/7 g/cm3

d)

28 g/cm3

81.

Density is the measure of how compact the mass is inside of an object?

a)

False

b)

True

82.

A piece of copper has a mass of 89g and a volume of 10 cm3.  What would be the density of the copper?

a)

0.89 g/cm3

b)

89 g/cm3

c)

8.9 g/cm3

d)

890 g/cm3

83.

Find the density of a 2 cm x 2 cm x 2 cm cube with a mass of 64 g.  

a)

13 g/cm3

b)

2 g/cm3

c)

10 g/cm3

d)

8  g/cm3

84.
When Pressure increases then the Volume must...
a)
Increase
b)
decrease
85.
Which container will have a lower pressure?
a)
left
b)
right
c)
they both have the same pressure
d)
I don't know
86.
According to Boyle's law of PV, at constant temperature, as the pressure of a given sample of gas is increased, the volume will –
a)
Increase
b)
Decrease
c)
Remains the same
87.
Boyle's PV law : When _______ is held constant, the pressure and volume of a gas are ________  proportional
a)
temperature,  equally
b)
mass, inversely
c)
temperature, inversely
d)
mass, equally
88.
If a balloon is cooled what will happen to the volume?
a)
Volume will increase
b)
Volume will decrease
c)
Volume will not change
89.
What is the formula for Boyle's Law?
a)
P1V1=P2V2
b)
P1V1/P2V2
c)
P1V2=P2V1
d)
P1/V1=P2/V2
90.
What is the formula Charles' Law?
a)
V = T
b)
VT = VT
c)
T1 / V1 = T2 / V2
d)
V1 / T1 = V2 / T2
91.

There are 65 liters of helium in a balloon at 35 K. If the temperature of the balloon is increased to 40 K, what will the new volume of the balloon be?

a)

40 L

b)

70 L

c)

74.3 L

d)

75.9 L

92.

What is the equation for the combined gas law?

a)

P1 x V1 = P2 x V2

b)

V1/T1 = V2/T2

c)

P1 x V1 / T1 = P2 x V2 / T2

d)

P1 / T1 = P2 / T2

93.

A sample of gas was collected in a 2.5 L bulb at 295K and 99kPa. What volume would the gas occupy at 273 K and 101 kPa?

a)

2.3 L

b)

2.6 L

c)

2.75 L

d)

0.44 L

94.

What formula would you use to solve the following: A 0.562 L container of Helium has a pressure of 9.5 atm. What volume would be necessary to decrease the pressure to 2.4 atm?

a)
b)
c)
d)
95.

What formula would you use to solve the following: A container of carbon monoxide gas is at a temperature of 65.0 °C and occupies a volume of 6.5L. At what temperature would it occupy a volume of 10.2L?

a)
b)
c)
d)
96.

In the Question: A cylinder has a volume of 5.4 L of air at a pressure of 140 kPa. If the volume is increased to 12.4L, what would the new pressure be? Which answer choice has the data correctly labeled?

a)

P1=5.4L, V1=140kPa; P2= 12.4L, V2= ?

b)

P1=140kPa, V1=5.4L ; P2= ?, V2=12.4L

c)

T1=140kPa, V1=5.4L ; T2= ?, V2=12.4L

d)

There was no important data to label

97.
4L of a gas is contained at 300 kPa and 200K. What will its volume be in L at 140 kPa and 100K?
a)
4.3L
b)
4.8L
c)
6.2L
d)
8.5L
98.

A tank of helium is full with a pressure of 4.5 kPa at 298K. What is the temperature of the tank when the pressure drops to 2 kPa?

a)

670.5K

b)

0.007K

c)

133.33K

d)

2682K

99.
In order to solve gas law calculations, temperature must be measured in:
a)
Fahrenheit
b)
Celsius
c)
Kelvin
d)
It doesn't matter 

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