Chapter 2.2 Specific heat capacity Flashcards
1
Q
What is the equation for a known change of temperature of a known mass of a substance?
A
Energy transferred, ∆E (joules,J) = Mass,m (kilograms) X specific heat capacity,c (joule per kilogram per degree Celsius) X temperature change,∆θ (degree Celsius)
2
Q
How should the equation be rearranged to give specific heat capacity?
A
c= ∆E/m∆θ
3
Q
What is the equation is used to calculate the energy needed to change the temperature of mass by ∆θ?
A
∆E=MxCx∆θ
4
Q
What happens if there is a greater mass of and object (to do with temperature)?
A
The greater the mass of an object, the more slowly its temperature increases when heated.
5
Q
Name the specific heat capacity of these substances:
- Water
- Oil
- Aluminium
- Iron
- Copper
- Lead
- Concrete
A
- Water - 4,200
- Oil - 2,100
- Aluminium - 900
- Iron - 390
- Copper - 385
- Lead - 130
- Concrete - 850
6
Q
When a substance is heated what does its temperature rise depend on?
A
- The amount of energy supplied to it
- The mass of the substance
- What the substance is
