84.1k views
0 votes
How do you know there was a chemical reaction? Check all indicators below. A solid precipitate formed. The color changed. A gas was produced. The reaction absorbed or released heat.

User Joel Seah
by
9.0k points

2 Answers

1 vote

The answer is A) a solid precipitate formed and B) the color changed

User Jonasberg
by
8.9k points
4 votes

Answer: A solid precipitate formed.

The color changed.

A gas was produced.

The reaction absorbed or released heat.

Explanation:-

A physical reaction is defined as the reaction in which a change in shape, size takes place. No new substance gets formed in these reactions.

A chemical reaction is defined as the reaction in which a change in chemical composition takes place. A new substance is formed in these reactions.

Indicators of a chemical change are:

1. formation of precipitate

2. Absorption or release of energy

3. Evolution of gas

4. Change in color

User Moliad
by
7.7k points

No related questions found