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3 votes
Which is a sign that a chemical change is occurring????

a: boiling
b:bubbling
c:freezing
d:melting

User Xandros
by
8.0k points

2 Answers

5 votes

Answer:

B.) Bubbling

Step-by-step explanation:

The usual signs of a chemical change are color changes, the formation of a precipitate, the formation of a gas, an odor change, and temperature changes. Bubbles are an example of a formation of gas.

User Bart N
by
7.5k points
3 votes

Answer:

B. Bubbling

Step-by-step explanation:

The formation of bubbles are gas fumes, which are new products. The rest are only physical changes.

User Casey Woolfolk
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8.0k points
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