Physical And Chemical Changes In Matter

Question 0

What three things are the most common evidence of a chemical change?

Answer 0

Change in color, production of a gas, or formation of a precipitate

Question 1

When does a chemical change occur?

Answer 1

When a substance reacts and forms one or more new substances

Question 2

What is precipitate?

Answer 2

Any solid that forms and separates from a liquid mixture