Science Test #1 - 2021

Question 1

Solid - Liquid

Answer 1

Melting

Question 2

Liquid - Gas

Answer 2

Evaporation

Question 3

Gas - Solid

Answer 3

Deposition

Question 4

Liquid - Solid

Answer 4

Freezing

Question 5

Gas - Liquid

Answer 5

Condensation

Question 6

Solid - Gas

Answer 6

Sublimation

Question 7

Chemical Change

Answer 7

a change in the substance’s particles

Question 8

Physical Change

Answer 8

a change in the arrangement of the substance’s particles

Question 9

What do the particles look like in a Solid?

Answer 9

• strong force of attraction
• closely packed
• vibrate

Question 10

What do the particles look like in a Liquid?

Answer 10

• strong force of attraction
• slide on one another
• fill the bottom of the container

Question 11

What do the particles look like in a Gas?

Answer 11

• weak force of attraction
• bounce off each other
• fill their container

Question 12

What happens to particles when they are Heated?

Answer 12

they travel faster, resulting in expansion if the container is flexible.

Question 13

What happens to particles when they are Cooled?

Answer 13

they travel slower, resulting in contraction if the container is flexible.

Question 14

What happens when a substance dissolves?

Answer 14

the solute particles spread themselves evenly among the solvent particles, creating a solution.

Question 15

4 signs of a chemical reaction?

Answer 15

• Temperature change
• release of gas
• colour change
• the new substance is formed