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Physical And Chemical Properties And Changes
Test Description: McGraw Hill Physical Science Chapter 7 Review
Instructions: Answer all questions to get your test result.
1) The Law of Conservation of matter states that the total amount of matter ______________ after it undergoes change.
A
weighs less
B
explodes
C
stays the same
D
disappears
2) An oreo cookie weighs 20 grams. It gets crushed into crumbs for a recipe. How much do its crumbs weigh?
A
20 grams
B
2 grams
C
10 grams
D
40 grams
3) What part of matter can be observed with the senses like size, shape, color, and how it feels?
A
solid
B
liquid
C
physical property
D
gas
4) Physical properties are
A
chemical changes
B
are properties that can be observed that change matter into new matter with new properties
C
parts of an atom
D
are properties that can be observed without changing the matter's identity
5) Anything that has mass and takes up space
A
mass
B
matter
C
density
D
volume
6) This force controls weight
A
buoyancy
B
friction
C
gravity
D
wind resistance
7) Which of the following examples provides evidence of a PHYSICAL change?
A
When mixed, baking soda and vinegar form gas bubbles
B
Wood is burned and releases smoke and ash
C
Boiling water bubbles when heat is added
D
Iron rusts over time
8) Which of the following options provides evidence of a CHEMICAL change?
A
Boiling water bubbles when heated
B
Salt dissolves in water
C
Rocks separate when soil is sifted
D
Wood is burned and releases smoke and ash
9) Water is boiling on a stove, producing steam. What conclusion can you make about the change that is occurring?
A
Heat indicates a chemical change
B
The clear color indicates a chemical change
C
Boiling water bubbles indicate a chemical change
D
Steam indicates a state of matter change
10) Which of the following is true?
A
A physical change can produce a precipitate
B
A physical change produces a new substance
C
A chemical change does not produce a new substance
D
A chemical change can produce a new substance
11) Is cutting an apple into slices an example of a physical change or a chemical change?
A
chemical
B
physical
12) Deposition is the phase change in which a gas turns straight into a ____________ without first turning into a liquid.
A
liquid
B
gas
C
solid
13) What phase change is occurring when substances like dry ice turn straight from a solid to a gas?
A
freezing
B
sublimation
C
deposition
D
evaporation
14) This must be added or removed in order for a phase change to occur.
A
water
B
thermal energy
C
friction
D
fuel
15) When you see drops of liquid water on your cold soda can caused by cooling of the water vapor in the air, ______________ has occurred.
A
melting
B
freezing
C
condensation
D
sublimation
*select an answer for all questions
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