energy changes in a system Flashcards
1
Q
Define the ‘Specific Heat Capacity’ of a
substance
A
The amount of energy needed to raise
the temperature of 1 kilogram of a
substance by 1 degree Celsius.
2
Q
State the units for Specific Heat Capacity
A
J/°C/kg
Joules/Degree Celsius/Kilogram
3
Q
What is the definition of ‘Power’?
A
The rate at which energy is transferred
(or rate at which work is done)
4
Q
What is the unit of power?
A
Watt (W)
5
Q
Give examples of chemical energy stores.
A
● Food
● Fuel (eg. wood, coal, petrol)
6
Q
State 4 different stores of energy
A
1.Kinetic Energy
2. Gravitational Potential Energy
3. Elastic Potential Energy
4. Chemical Energy
