Specific heat capacity (Edexcel GCSE Physics Combined Science): Flashcards

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Specific heat capacity
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What does specific heat capacity (c) refer to?

How well a substance stores heat

Specific heat capacity definition

Energy needed to raise 1 kg of substance by 1°C

Formula for change in thermal energy

ΔE=m×c×Δθ\Delta E = m \times c \times \Delta \theta

Unit of ΔE\Delta E (change in thermal energy)

Joules (J)

Unit of specific heat capacity (c)

Jkg1°C1J kg^{-1} °C^{-1}

Rearranged formula for c

c=ΔEm×Δθc = \frac{\Delta E}{m \times \Delta \theta}

What heating a substance increases

Its internal energy

What temperature measures in kinetic theory

Average internal energy of particles

Property of materials needing lots of energy to heat

They also release lots of energy when cooling down

First step in SHC of water experiment

Measure mass of insulating container using balance

Initial reading on joule meter in SHC experiment

Zero

How many times to repeat SHC experiment and why

3 times to get an average

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