Unit 1/Module 2: Properties of Matter

Question 1

What are the three states of matter?

Answer 1

Solid, liquid, and gas

Question 2

What is the Law of Conservation of Mass?

Answer 2

Mass is neither created nor detroyed

Question 3

What is a physical change?

Answer 3

Any change that does not affect the structure or identity. Ice melting would be physical because it still is water.

Question 4

What is a chemical change?

Answer 4

Any change that affects and alters the structure or identity. Burning coal is chemical because it no longer is coal and instead changes.