Physics Solids Liquids Gases YR9 EOY

what is the formula linking density, mass and volume

density = mass/volume

what is the formula linking pressure, force and area

pressure = force/area

what is the formula for pressure difference

pressure difference = height x density x gfs

describe the arrangement in particles in solids

regular, tightly packed

describe the arrangement in particles in liquids

irregular pattern, close

describe the arrangement iin particles in gases

very far apart, irregular

name the change when a solid -> liquid, and solid -> gas

solid - liquid = melting

solid - gas = sublimation

name the changes when liquid -> solid, and liquid -> gas

liquid - solid = freezing

liquid - gas = boiling

name the change when gas -> solid, and gas -> liquid

gas - solid = deposition

gas - liquid = condensation

how to particles in a gas act?

move randomly in all directions

how to find kelvin temperature

Kelvin temp = celcius temp + 273

what is the unit for pressure?

Pascals (Pa)

In liquids and gases at rest, how does pressure act?

equally in all directions

where does gas pressure come from?

particles hitting container walls

If temp. increases, what happens?

pressure increases

if volume of container decreases, what happens?

Pressure increases

How do particles in a solid act?

vibrates in fixed position, fixed shape

How do particles in a liquid act?

particles move around each other