Required Practical - Specific Heat Capacity Flashcards
What is the point of this experiment?
To find out the specific heat capacity of a material
What is Specific Heat Capacity?
the amount of energy needed to raise the temperature of 1kg by 1ºC
What is the Specific Heat Capacity Formulae -> SHC =
energy transferred/mass x temp. change
Energy =
Power x Time
Power =
Current x potential difference
What is the method:
- set up apparatus (Joulemeter, Heater, Insulation, Thermometer)
- Measure the start temperature
- Switch on the electric heater for a minute
- Measure the end temperature
- Measure the voltage and current to find the power
- repeat for different liquids or solids
- Calculate SHC
- If similar to other groups it is repeatable
What is the independent variable?
The type of liquid or solid
What is the dependent variable?
Temperature
What are the control variables?
amount of liquid used and energy provided
Hazards:
Dealing with a hot heater and this could cause burns
Why do you insulate the block?
to stop heat loss to the surrounding air
Why is your answer not accurate?
not all heat was transferred into the block or thermometer
Why is the temperature change slower at first?
It takes the block time to heat up, and then time for the heat to reach the thermometer
