Density

• Density is measured as mass per unit volume
• Volume = capacity / cm3
• The density of a material tells us the

  mass for a given volume. Kg/m3
• Solids and liquids have high density - as particles are compacted /close together

  gas has a low density
• If the particle sinks the bottom density is at a high point
• Density table

  
• Polystyrene- small density as theres air spaces 8nside it even thought it’s a solid
• Density mass divide by volume
• The water dispersed out of the overflow can is the volume of the object
• If it sinks - it’s dense
• Why does ice float in water - when water freezes it expands, same about of matter particles but more volume - decreases density.