Which choices indicate a chemical change?

Question

Which choices indicate a chemical change?

_(Select all that apply.)_

two liquids mix and release an odor

two colors mix to make a new color

liquid turns to gas in the form of bubbles when boiling

two liquids form a precipitate

B and C?

Answer 1

Wait, A and C

Answer 2

Google "how do I tell when a chemical reaction occurs" without th quotation marks and read several if the links.

Answer 3

Yes, the correct choices that indicate a chemical change are B and C. When two colors mix to make a new color, it suggests a chemical reaction has occurred. Similarly, when a liquid turns into a gas in the form of bubbles during boiling, it is also a sign of a chemical change taking place.