When an object is heated, its molecules absorb heat energy which increases their kinetic energy and causes them to move faster, raising the temperature of the substance. Heat capacity is defined as the amount of energy needed to raise the temperature of a substance by 1 degree Celsius or Kelvin, while specific heat capacity refers to the energy needed to raise the temperature of 1 kilogram of a substance by 1 degree. Specific heat capacity is calculated by dividing the total energy by the mass and temperature change.

1. HEAT CAPACITY SEC 3 PURE PHYSICS

2. Heating on a Molecular Level When an object is heated, its molecules will absorb the heat energy This heat energy is converted to kinetic energy Enabling the molecules to move faster With the increase in speed of the molecules, we would see a temperature rise of the substance

3. Heat Capacity Heat capacity is defined as the amount of energy needed to raise the temperature of a substance by 1 o C or 1K.

4. Calculating Heat Capacity Unit for heat capacity: J/K or J/ o C Heat capacity Total Energy Difference/Change in temperature

5. Specific Heat Capacity Specific heat capacity is defined as the amount of energy needed to raise the temperature of 1kg of the substance by 1 o C or 1K.

6. Calculating Specific Heat Capacity Unit for Specific Heat Capacity: JK -1 kg -1 Specific heat capacity Total energy mass Change/ difference in temperature