Particle Model of Matter

Strong forces of attraction = solids.

Density (kg/m3)

Density = Mass / Volume

• How closely particles are packed, compressed materials have a high density.
• No change in mass.
• Density changes between different states of matter.

Practicle sheet for prac to find the density of an object that's hard to mathamatically calculate the volume for the formula.

Internal Energy and Changes of State

Heating particles transfers energy to it's kinetic energy stores.

Change in state occurs when particles are given enough energy to break the bonds holding the particles together.

A change in state conserves mass: to do with changes in energy (loseing and gaining)

Specific Latent heat- The…