Chemical Reaction Review Question Preview (ID: 48128)


Utah 8.1.3 Test Review. TEACHERS: click here for quick copy question ID numbers.

How do you know when a chemical reaction has occurred?
a) a phase change has occurred; it would be easy to reverse
b) a new substance has formed; it would be hard to reverse
c) the substance changes size, shape, texture and mass
d) the mass of the reactants is changed into energy that is given off

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) color of vinegar changed
b) baking soda dissolved
c) vinegar evaporated
d) bubbles formed

In a chemical reaction, bonds between atoms are broken, and atoms rearrange and form new bonds.
a) True
b) False
c)
d)

5. When a substance undergoes a Chemical reaction, its physical properties also change?
a) True
b) False
c)
d)

Chemical Reaction: Ice Melts
a) Yes
b) No
c)
d)

Chemical Reaction: Iron reacts with oxygen to form rust
a) Yes
b) No
c)
d)

Chemical Reaction: Burning Wood
a) Yes
b) No
c)
d)

Chemical Reaction: Crushing a soda can
a) Yes
b) No
c)
d)

Chemical Reaction: Water boils
a) Yes
b) No
c)
d)

Chemical Reaction: Two clear liquids combine and become blue
a) Yes
b) No
c)
d)

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