Density (AQA GCSE Physics Combined Science): 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}

Units of density

kg/m³ (kilograms per metre cubed)

Units of mass in density formula

kg (kilograms)

Units of volume in density formula

m³ (metres cubed)

Equipment to measure mass

Balance

How to find volume of regular object

Multiply the dimensions

How to measure volume of irregular object

Measure volume of liquid displaced

Equipment for measuring displaced liquid volume

Eureka can

How do solid and liquid densities compare?

Similar densities

How does liquid density typically compare to solid?

Liquids usually have lower density than solids

Exception: density of ice vs water

Ice has lower density than water

How does gas density compare to solids/liquids?

Far lower density

What remains constant during a change of state?

Mass

What does density depend on

Spacing of atoms in matter

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