particle model (C1.1)

Question 1

Matter

Answer 1

The term matter refers to anything that occupies space and has mass

Question 2

particle

Answer 2

A tiny bit of matter

Question 3

The particle model

Answer 3

Describes how particles are arranged and how they move in liquids, solids and gases.

Question 4

Limitations of the particle model

Answer 4

• the forces between particles
• the size of the particles
• the space between particles

Question 5

Rules

Answer 5

you cannot compress a substance in its solid state or its liquid state. This is because there is space for the particles to move into

A substance in its solid state has a fixed shape and cannot flow. This is because its particles are vibrate along fixed positions and cannot move from place to place.

Question 6

Physical change

Answer 6

A change in a substance that does not involve a change in the identity of the substance

Question 7

chemical change

Answer 7

A change that occurs when one or more substances change into entirely new substances with different properties.

Question 8

What happens to particles during change

Answer 8

However, in chemical changes, particles break up and then join together in different ways.

Question 9

Atoms

Answer 9

Building blocks of life.