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Chemical Reactions
Test Description: Identifying evidence of new substances formed
Instructions: Answer all questions to get your test result.
1) Two substances combine to form a new substance with new properties.
A
chemical change
B
mixture
C
physical change
2) Two liquids combine creating a solid substance at the bottom. This solid is called a
A
precipitate
B
physical change
C
molecule
D
atom
3) Which of the following is an example of a chemical change?
A
boiling water on the stove
B
cutting a piece of paper
C
dissolving sugar in water
D
iron rusting
4) Which of the following is NOT a chemical change
A
acid rain weathering limestone
B
freezing water
C
digesting food
D
baking cookies
5) Which of the following IS evidence of chemical change
A
change in state
B
change in smell
C
change in shape
D
change in size
6) Which of the following IS evidence of chemical change
A
change in shape
B
expected change in color
C
change in temperature
D
change in size
7) Which of the following is NOT and example of chemical change?
A
mixing salt in water and the salt disolves
B
combining a white substance and clear liquid and a gas is produced
C
combining two clear liquids and a bright pink liquid appears
D
mixing a clear liquid with a white liquid and a solid substance forms
8) Which of the following NOT a physical change?
A
melting butter
B
cutting paper
C
boiling water
D
burning wood
9) All of the following are evidence of chemical change EXCEPT
A
light production
B
sound production
C
change in state of matter
D
temperature change
10) Which IS an example of a chemical change?
A
mixing salt and pepper
B
mixing oil and water
C
photosynthesis
D
evaporation
*select an answer for all questions
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