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