Test 1: Changes of Matter

Question 1

How many categories of changes are there and what are they

Answer 1

2 types; Physical and Chemical

Question 2

What do physical changes do/ define a physical change

Answer 2

Alters the physical properties but the substances identity remains the same

Question 3

T/F
Generally, physical changes can be more easily reversed than a chemical change

Answer 3

TRUE

Question 4

What is it called when a solid turns into a liquid

Answer 4

melting

Question 5

What is it called when a liquid turns into a solid

Answer 5

Freezing

Question 6

What is it called when a liquid turns into a gas

Answer 6

evaporation/ boiling

Question 7

What is it called when a gas turns into a liquid

Answer 7

condensation

Question 8

What is it called when a solid turns into a gas

Answer 8

Sublimation

Question 9

What is it called when a gas turns into a solid

Answer 9

deposition

Question 10

What are some characteristics of chemical changes

Answer 10

• Something with a new identity is formed in a chemical change
• Chemical changes are not easily reversed
• Chemical changes are also known as chemical reactions

Question 11

What are the 5 pieces of evidence that we use to figure out if something is a chemical change

Answer 11

1. Heat is produced
2. Light is produced
3. Bubbles are produced
4. Solid (precipitate) is produced
   *5. Color change (if the color change is happening on its own, other wise it’s considered to be physical)