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Measuring energy changes

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Presentation on theme: "Measuring energy changes"— Presentation transcript:

1 Measuring energy changes

2 Specific Heat capacity
The amount of heat energy required to raise the temperature by one degree Celsius. Material Specific heat capacity (J/g °C) Water 4.2 Cooking Oil 1.2 Copper 0.38 Lead 0.13 Steel 0.46

3 How can we work out how much energy a fuel releases?

4 How to calculate the energy change in this situation
Burning alcohol raised the temperature of 50cm of water from 16 degrees celcius to 41 degrees celcius. How much energy was released by the fuel?

5 You can calculate the amount of energy required to heat something using the following equation
E = m × C × T Energy mass specific heat temperature Transferred capacity change (J) (g) (J/g°C) (°C) 50 x 4.2 x 25 = 5250J

6 Complete Q1 + 2(a)

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