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Lesson 15 - Physical And Chemical Changes
Test Description: SPI 0807.9.8
Instructions: Answer all questions to get your test result.
1) A characteristic that can be observed or measured without changing the identity of a substance. (Mass, volume, color, shape, hardness, magnetism, weight, and state)
A
physical property
B
combustion
C
chemical property
D
reactivity
2) A characteristic that determines how a substance will interact with other substances during a chemical reaction. (Ability to burn or rust)
A
combustion
B
chemical property
C
physical property
D
precipitate
3) How likely the atoms or molecules of one substance are to form bonds with the atoms or molecules of other substances.
A
Reactivity
B
Chemical change
C
Physical change
D
Combustion
4) Alters the physical properties of a substance without changing the identity of the substance.
A
Combustion
B
Chemical Change
C
Reactivity
D
Physical Change
5) Ice melting to water is an example of
A
Precipitate
B
Physical Change
C
Chemical Change
D
Reactivity
6) Occurs when one substance changes into a new substance with different properties
A
Chemical change
B
Precipitate
C
Combustion
D
Physical change
7) Burning a match is an example of a
A
Reactivity
B
Precipitate
C
Physical change
D
Chemical change
8) A solid formed by a chemical reaction that takes place in a solution (soap scum)
A
Reactivity
B
Vaporization
C
Deposition
D
Precipitate
9) Chemical reaction in which oxygen combines with certain other substances, and heat and light are given off.
A
Combustion reaction
B
Precipitate
C
Physical change
D
Reactivity
10) Which of the following is an example of a chemical change?
A
a pencil breaking
B
water evaporating
C
carbon joining with oxygen to form carbon dioxide
D
ice cream melting
11) What happens during a physical change?
A
A substance may look different but does not change its identity.
B
The identity of the substance is changed.
C
A chemical reaction occurs.
D
New substances are formed.
12) What two quantities must be known to calculate the density of a sample of matter?
A
length and mass
B
color and mass
C
solubility and mass
D
mass and volume
13) Which is a chemical property?
A
hardness
B
reactivity
C
boiling point
D
freezing point
14) Bubbles, a change in color, the release of heat, and giving light are all signs of
A
Precipitate
B
Chemical property
C
Chemical reaction
D
Physical change
*select an answer for all questions
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