Energy of matter physics paper 1 p5

What is sublimation?

A solid going to a gas

What is condensation?

Gas to a liquid

What is melting?

solid to a liquid

What is it called going from a liquid to a solid?

Freezing

What two quantities do you need to find to measure the density of a solid or liquid?

Mass and volume

What happens to the particles in a substance if the temperature is increased?

They move faster so their kinetic energy store goes up

Why is the ass of a substance conserved when it changes state?

The number of particles does not change

What is specific heat capacity?

The amount of energy needed to raise the temperature of a 1kg material by 1degree C

Draw and describe what a solid arrangement looks like

Particles are in contact with each other and held in a fixed position

Draw and describe what a liquid arrangement looks like

Particles are in contact with each other and the forces of attraction are weaker in the liquid than solid

Draw and describe what a gas arrangement looks like

The particles are spread out with almost no force of attraction between

The energy transferred when a substance changes state is called?

Latent heat

What does heating a substance do?

Increase its internal energy

What state has the lowest density?

Gas