Density (AQA GCSE Physics): Flashcards

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Density
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Definition of density

Mass per unit volume

Formula for density

ρ=mV\rho = \frac{m}{V}

Unit for density

kg/m3\text{kg/m}^3 (kilograms per metre cubed)

Unit for mass in density formula

kg\text{kg} (kilograms)

Unit for volume in density formula

m3\text{m}^3 (metres cubed)

Equipment to measure mass of an object

Balance

How to find volume of regular objects

Multiply the dimensions

How to find volume of irregular objects

Drop in liquid and measure volume displaced

Equipment for measuring displaced liquid volume

Eureka can

Equipment for measuring liquid volume directly

Measuring cylinder

Density of liquids compared to solids (usually)

Lower density than solids

Main exception to solid-liquid density rule

Ice and water (ice less dense)

Density of gases compared to solids/liquids

Far lower density

What stays constant during change of state

Mass

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