Particles

Question 1

Describe a Solid

Answer 1

Cannot be compressed
Cannot flow
Has a fixed shape
High density
Low energy

Question 2

Describe a liquid

Answer 2

Cannot be compressed
Can flow
Takes the shape of the bottom of the container

Question 3

Describe a Gas

Answer 3

Can be compressed
Can flow
Spread out and fills up the whole container
Low density
High energy

Question 4

Why does a substance not get hotter when melting/boiling?

Answer 4

The heat energy is being used to overcome the forces between the particles rather then making the substance hotter

Question 5

What is the melting/boiling point?

Answer 5

The temperature at which the substance turns from a solid to a liquid/liquid to gas when heated

Question 6

Describe Gas pressure

Answer 6

Gas pressure is caused by particles colliding with the walls of a container

Can increase by:
-> Increasing the number of gas particles
-> Increasing the temperature
-> Decreasing the volume of container