Particles

Question 1

What is the arrangement and movement of solid particles

Answer 1

They are arranged in a fixed position always touching their neighbours and vibrate together.

Question 2

What is the arrangement and movement of liquid particles.

Answer 2

They are arranged randomly but always touch their neighbours. They move freely and slide off each other

Question 3

What is the arrangement and movement of gas particles

Answer 3

They are arranged randomly and never touch their neighbours. They bounce off each other.

Question 4

What are particles

Answer 4

They are tiny pieces that materials are made from

Question 5

What are the 3 states of matter

Answer 5

Solid, liquid and gas

Question 6

Which of the 3 states of matter can be compressed

Answer 6

Gas

Question 7

Which of the 3 states of matter can flow

Answer 7

Liquid and gas

Question 8

Which of the 3 states of matter has a fixed shape

Answer 8

Solid

Question 9

Which of the 3 states of matter occupy a volume

Answer 9

Liquid and solid

Question 10

What is a property of a substance or material

Answer 10

It describes the appearance and how it behaves.

Question 11

What is melting

Answer 11

The stage when solid turns to liquid

Question 12

What is freezing

Answer 12

The stage when liquid turns to solid

Question 13

What is boiling/evaporating

Answer 13

The stage when liquid turns to gas

Question 14

What is condensing

Answer 14

The stage of gas to liquid

Question 15

What is meant by melting point

Answer 15

The temp at which it melts. Below this temp it will stay as a solid

Question 16

What is meant by boiling point.

Answer 16

The temp at which the substance boils. Above this temp it will change to a gas

Question 17

At which temp (compared to melting and boiling) will the substance be in a liquid state

Answer 17

Any temp in between the melting and boiling state

Question 18

What is sublimation

Answer 18

The stage when solid turns to gas

Question 19

Give an example of a substance that sublimes

Answer 19

Carbon dioxide

Question 20

How can you measure the boiling point.

Answer 20

1) The temperature/ heat
2) The results plotted on the diagram
3) The level section

Question 21

How can you use melting point to tell whether a solid substance is pure

Answer 21

It will have a flat surface if it is pure but would have a sharp surface if it’s not pure

Question 22

What is the difference between boiling and evaporating

Answer 22

Evaporation is when the particles escape from the surface. Boiling is when it bubbles throughout the liquid.

Question 23

When particles bump into or hit each other we say they…..

Answer 23

Collide

Question 24

What is diffusion

Answer 24

It is when an area of high concentration turns into an area of low concentration

Question 25

Which of the 3 states of matter can diffuse

Answer 25

Liquid and gas

Question 26

How can you make the rate of diffusion increase

Answer 26

Increase the temperature

Question 27

Do lighter or heavier particles diffuse quicker at a given temp

Answer 27

Lighter particles