Measuring energy changes. Specific Heat capacity The amount of heat energy required to raise the...
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Transcript of Measuring energy changes. Specific Heat capacity The amount of heat energy required to raise the...
![Page 1: Measuring energy changes. Specific Heat capacity The amount of heat energy required to raise the temperature by one degree Celsius. MaterialSpecific heat.](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0151a28abf838ccdaf8/html5/thumbnails/1.jpg)
Measuring energy changes
![Page 2: Measuring energy changes. Specific Heat capacity The amount of heat energy required to raise the temperature by one degree Celsius. MaterialSpecific heat.](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0151a28abf838ccdaf8/html5/thumbnails/2.jpg)
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
![Page 3: Measuring energy changes. Specific Heat capacity The amount of heat energy required to raise the temperature by one degree Celsius. MaterialSpecific heat.](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0151a28abf838ccdaf8/html5/thumbnails/3.jpg)
How can we work out how much energy a fuel releases?
![Page 4: Measuring energy changes. Specific Heat capacity The amount of heat energy required to raise the temperature by one degree Celsius. MaterialSpecific heat.](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0151a28abf838ccdaf8/html5/thumbnails/4.jpg)
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?
![Page 5: Measuring energy changes. Specific Heat capacity The amount of heat energy required to raise the temperature by one degree Celsius. MaterialSpecific heat.](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0151a28abf838ccdaf8/html5/thumbnails/5.jpg)
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
![Page 6: Measuring energy changes. Specific Heat capacity The amount of heat energy required to raise the temperature by one degree Celsius. MaterialSpecific heat.](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0151a28abf838ccdaf8/html5/thumbnails/6.jpg)
Complete Q1 + 2(a)