P1 - Specific Heat Capacity

Concise revision cards about specific heat capacity (SHC) that you need to know for your Physics OCR GCSE.

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What is Specific Heat Capacity?

Specific heat capacity;

  • the amount of energy a substance can store
  • the amount of energy it takes to heat 1kg of a substance by 1 degree celsius
  • varies from substance to substance
  • for example, water's SHC is higher than mercury's
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The Equation

You need to learn the equation for specific heat capacity for your exam.

ENERGY = MASS  X  SPECIFIC HEAT CAPACITY  X  TEMPERATURE CHANGE

or...

                 energy                  

mass x SHC x temp. change

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Example Questions

1. How much energy is needed to heat 2kg of water from 10 degrees celsius to 100 degrees celsius?

2. An empty 200g aluminium container cools down from 115 degrees celsius to 10 degrees celsius and loses 19,068J of energy. What is the SHC of aluminium?

***Questions from the "CGP GCSE Physics Exam Board: OCR Gateway" book***

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Answers

1. 756,000J

2. 908J/kg/°C

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