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7th Grade- Unit 7
Test Description: Properties of matter
Instructions: Answer all questions to get your test result.
1) color, shape, and texture are
A
chemical changes
B
chemical properties
C
physical changes
D
physical properties
2) Density describes the relationship between a substance's
A
temperature and mass
B
matter and mass
C
mass and volume
D
volume and area
3) Dissolving sugar in water is an example of
A
pressure change
B
change in state
C
physical change
D
chemical change
4) the formation of rust on iron is a chemical change because
A
the substance remains the same
B
a new substance has been formed
C
the color and shape have changed
D
the mass and volume have changed
5) the process by which a solid becomes a liquid is called
A
evaporating
B
condensation
C
melting
D
freezing
6) the process by which liquid becomes a solid is called
A
boiling
B
freezing
C
evaporating
D
melting
7) the process by which a liquid becomes a gas is
A
evaporation
B
boiling
C
condensation
D
freezing
8) the process by which gas becomes a liquid is called
A
freezing
B
boiling
C
condensation
D
evaporation
9) when a sculptor shapes marble to make a statue it is a (be ready to explain why on the test)
A
chemical change
B
physical change
10) Water changing from gas to liquid to solid and back to liquid
A
physical changes
B
chemical changes
11) which of these is not a sign of a chemical change?
A
bubbles form
B
an odor is produced
C
state of matter changes
D
temperature changes
12) To separate salt from a salt water mixture you would use
A
a magnet
B
it is impossible to separate
C
a filter
D
boiling and evaportation
13) A tea bag is a type of ______________ because it allows water to pass through it while holding the tea leaves inside
A
filter
B
water treatment plant
C
solution
D
magnet
14) a stick of butter is considered frozen even if it has not been in the freezer (be ready to explain this is an essay)
A
false
B
true
15) The formula for density is:
A
D= m / V
B
D= m - V
C
D= m + V
D
D= m x V
16) has fixed mass and fixed volume
A
liquid
B
gas
C
solid
17) This type of material conducts electricity
A
rubber
B
metal
C
plastic
D
non-metal
18) All substances have the same boiling point
A
true
B
false
19) is sharpening a pencil a physical or chemical change (be ready to explain in a short essay of the test)
A
physical change
B
chemical change
20) The density of water is 1.0 g/mL. Anything with a density less than 1.0 g/mL will float in water. the density of a spoiled egg is about 0.9 g/mL. If you place a spoiled egg in water, it floats. What does that tell you about the egg?
A
the egg is less dense than water
B
the egg is more dense than water
*select an answer for all questions
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