Which Is A Clue That A Chemical Change Has Occured?

A. A beaker suddenly becomes very warm when you mix two room-temperature liquids in it.

B. A liquid forms bubbles when it reaches a high temperature.

C. Water changes color when you add food coloring to it.

D. A car door feels hot if you touch it on a summer afternoon.

Question

Nico Klein

Biology

14 July, 14:09

Which Is A Clue That A Chemical Change Has Occured?

A. A beaker suddenly becomes very warm when you mix two room-temperature liquids in it.

B. A liquid forms bubbles when it reaches a high temperature.

C. Water changes color when you add food coloring to it.

D. A car door feels hot if you touch it on a summer afternoon.

+1

Answers (1)

Know the Answer?

Lea Boyer · Answer 1

Answer: A

Explanation:

B: That's boiling

C: That's physical.

D: That's just heat being added.

It's A because two liquids making one warmer liquid isn't natural without a chemical making it do so.