Specific heat capacity
- Created by: aleena147
- Created on: 30-10-19 18:18
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- specific heat capacity
- the specific heat capacity of a substance is the change in energy in the substances thermal store needed to raise the temp of 1kg of that substance by 1 degrees
- change in thermal energy=mass*specific heat capacity*change in temp
- heating a substance increases the energy in its thermal store
- in kinetic theory, temp is a way of measuring the average internal energy of a substance
- practical
- 1. measure the mass of substance by using a weighing scale
- 2. set up apparatus. make sure joule meter reads zero.
- 3. measure the temp of the substance your investigating, then turn on the power
- 4. when temp has increased by 10 degrees on the thermometer, stop the experiment and record the energy on the joulemeter.
- 5. calculate specific heat capacity using formula
- 6. repeat whole experiment three times and calculate a mean
- tips
- watch out for systemic errors due to energy escaping from your experiment
- insulating container helps by reducing energy that escapes from the side and the bottom of the substance your investigating
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