Heat capacity is the amount of heat needed to raise a system's temperature by one degree, expressed in units of thermal energy per degree. Specific heat capacity is the amount of heat needed to increase the temperature of one kilogram of a substance by one degree, expressed in joules per kg per degree Kelvin. The document provides formulas for heat capacity and specific heat capacity, and gives an example quiz to test understanding of specific heat capacity definitions and calculations involving changes in temperature and heat energy.

1. HEAT CAPACITY
AND SPECIFIC HEAT
CAPACITY

2. Heat capacity
the amount of heat needed to raise the system's temperature by
one degree (usually expressed in Celsius or Kelvin).
It is expressed in units of thermal energy per degree temperature.

3. Formula:
unit of heat capacity: J/K
Where
C = heat capacity (J/K)
Q = Amount of heat energy (J)
Δθ = change in temperature (K)

4. Specific Heat Capacity
The amount of heat needed to increase the temperature of one
kilogram of a substance by one degree is the specific heat
capacity.
It is expressed in joules per kg per degree kilvin.

5. Formula:
unit of specific heat capacity: J/kgK
Where
c = specific heat capacity (J/kgK)
Q = Amount of heat energy (J)
Δθ = change in temperature (K)

6. Quiz
1-What is the correct definition of specific heat capacity?
A. The amount of water taken to heat a kettle.
B. The amount of heat per unit mass to lower the
temperature by three degrees Celsius.
C. The amount of heat per unit mass required to raise the
temperature by one degree Celsius.
D. Jenny thurling.
C. The amount of heat per unit mass required to raise
the temperature by one degree Celsius.

7. 2. When 3.0 kg of water is cooled from 80.0 C to 10.0 C, how
much heat energy is lost?
3. How much heat is needed to raise a 0.30 kg piece of
aluminum from 30. C to 150 C?
4. Calculate the temperature change when:
a)10.0 kg of water loses 232 kJ of heat.
b) 1.96 kJ of heat are added to 500. g of copper.

8. The end 
Group 2
Ahmed Elwan Abdul Fattah Abo Hamad
Abdul Rahman Gamal Suleiman
David Tawfik Fahmy Tawfik
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