14. Specific Heat Capacity

Question 1

what is specific heat capacity?

Answer 1

heat energy required to raise the temperature of a 1kg mass of a substance by one degree

Question 2

equation

Answer 2

change in thermal energy = mass x c x change in temperature

Question 3

How to find specific heat capacity of a solid?

Answer 3

1. Find mass of copper block in kg using balance
2. Place thermometer into smaller bore of copper block and measure initial temp of sample
3. Place copper block into insulating holder and place onto heatproof mat
4. Lubricate electrical heater w petroleum jelly and insert into larger bore in metal block
   5.Connect electrical heater to power pack, add ammeter and voltmeter to circuit
5. Switch on power supply, start stopwatch - record values of voltage and current for heating circuit
6. Wait for temp of copper block to rise by between 20 and 30c
7. Switch of power supply, record time
8. Wait until temp on thermometer stops rising and record final temp of copper block

Question 4

How to find specific heat capacity of water

Answer 4

1. Water in beaker
2. Find mass
3. Measure initial temp
4. Place electrical heater into beaker of water
5. Add ammeter and voltmeter
6. Start stop clock, switch on power supply
7. Wait for temp to rise between 20 and 30 c
8. Switch off power supply and stop stop clock, record time
9. Wait until temp stops rising and record