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Chemical Reaction Review
Test Description: Utah 8.1.3 test review
Instructions: Answer all questions to get your test result.
1) How do you know when a chemical reaction has occurred?
A
a new substance has formed; it would be hard to reverse
B
the substance changes size, shape, texture and mass
C
a phase change has occurred; it would be easy to reverse
D
the mass of the reactants is changed into energy that is given off
2) Two students mix vinegar and baking soda. They observe bubbles forming, baking soda dissolving, and vinegar turning cloudy. They infer that a Chemical reaction has occurred. Which data support this inference?
A
bubbles formed
B
vinegar evaporated
C
color of vinegar changed
D
baking soda dissolved
3) In a chemical reaction, bonds between atoms are broken, and atoms rearrange and form new bonds.
A
False
B
True
4) 5. When a substance undergoes a Chemical reaction, its physical properties also change?
A
True
B
False
5) Chemical Reaction: Ice Melts
A
No
B
Yes
6) Chemical Reaction: Iron reacts with oxygen to form rust
A
No
B
Yes
7) Chemical Reaction: Burning Wood
A
Yes
B
No
8) Chemical Reaction: Crushing a soda can
A
No
B
Yes
9) Chemical Reaction: Water boils
A
No
B
Yes
10) Chemical Reaction: Two clear liquids combine and become blue
A
No
B
Yes
*select an answer for all questions
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