Energy changes in systems (AQA GCSE Physics Combined Science): Flashcards

Thermal energy needed to raise 1 kg of material by 1°C

$\Delta E = m \times c \times \Delta \theta$

Change in thermal energy (J)

Mass (kg)

Specific heat capacity (J/kg°C)

Change in temperature (°C)

4200 J/kg°C

It needs lots of energy (high specific heat capacity)

They need less energy to heat up

Stops energy being wasted to surroundings

$c = \frac{\Delta E}{m \times \Delta \theta}$

900 J/kg°C