States Of Matter

Question 1

Condensing

Answer 1

The process of gas changing into liquid

Question 2

Sublimation

Answer 2

The change of gas turning in to a solid without being a liquid

Question 3

Evaporation

Answer 3

The change of liquid to gas

Question 4

Freezing

Answer 4

The change of state from a liquid to a solid

Question 5

Melting

Answer 5

Melting the change of state from solid to liquid

Question 6

Boiling point

Answer 6

The temperature at which a substance boils at. The substance evaporates quickly.

Question 7

Melting point

Answer 7

The temperature at which a substance melts at (solid into a liquid). A liquid can freeze at the same temperature.

Question 8

Particle model

Answer 8

A description of the moving particles that make up all matter and how they behave. The model explains solids, liquids and gases

Question 9

Fog

Answer 9

It is a visible mass consisting of cold water droplets or ice suspended in the air or the earths surface.

Question 10

Expansion

Answer 10

Increase in size due to the movement of particles in a substance

Question 11

Meteorologist

Answer 11

Scientist who use observation of the atmosphere to predict or explain the weather

Question 12

The properties of a solid 3 examples

Answer 12

1. Take up a iced amount of space
2. Not able to be compressed
3. Define shape cannot be changed easily

Question 13

The properties of a liquid 3 examples

Answer 13

1. Liquids take up a fixed amount of space
2. Can not be compressed
3. It’s shape is kept to the shape of the container

Question 14

Properties of gas 3 examples

Answer 14

1. It spreads unless kept in a container
2. It diffuses and take up as much space as it can
3. Can be compressed

Question 15

Explain diffusion and give an example

Answer 15

Diffusion is the spreading out or movement of particles from a region of high concentration to a region of low concentration to create equilibrium
Example-a perfume/spray

Question 16

Name a liquid that can be found in all three states at normal temperatures.

Answer 16

Water in the ocean, in the polar ice, and in the air as water vapour.

Question 17

Example of solid to liquid and what it’s called

Answer 17

Melting- ice cubes into a liquid

Question 18

Example of gas to liquid what it’s called

Answer 18

Condensation- having a cold drink on a hot day as it “sweats”

Question 19

Example of liquid to solid what it’s called

Answer 19

Freezing-water yo ice cubes

Question 20

Example of solid to gas what it’s called

Answer 20

Sublimation-dry ice

Question 21

Name three substances that have a melting point greater than the comfortable room temperature

Answer 21

Aluminium-660
Iron-1535
Table salt-804

Question 22

What are the units of measurements for volumes of liquid?

Answer 22

1ml= 1cm3 
1l= 1000cm3 
1000l= 1m3

Question 23

When heat was applies to a metal ring why could the ball easily fir through. Particle model?

Answer 23

As the metal ring was heating the particles inside the solid was expanding. Allowing the particles to move faster create an increase in the distance between the particles and the attraction between the particles decreases causing the inner radius increased in size so the ball could fit through the ring easily

Question 24

Explain how particles behave when heated is applied.

Answer 24

When heat is applied to particles:

• particles move faster
• distance between particles increase
• the attraction between the particles decreases

Question 25

Explain how particles behave when cooled

Answer 25

When heat is removed the particles contract:

• particles move more slowly
• distance between particles gets smaller
• the attraction between the particles increase

Question 26

Explain how clouds are formed

Answer 26

Clouds are formed by tiny droplets of water, kept up by air currents.

Question 27

Inter particle space

Answer 27

The space between the particles within a solid liquid or gas

Question 28

What is the core temperature of the human body?

Answer 28

36-37

Question 29

Diffusion

Answer 29

The spreading of one substance through another due to the movement of their particles