Internal Energy
Physics: AQA GCSE Higher, topic 3.2.1
Internal Store of Energy
The amount of energy in an object’s internal store is the sum (total) of the kinetic and chemical potential stores of the object's particles.
Kinetic store
- The energy in an object's kinetic store comes from the random motion of its particles.
- The temperature of a body (object) is a measure of the energy in the kinetic stores of its particles.
- Increasing a body’s temperature increases the energy in the kinetic stores of the body’s particles, which means that the energy in the body’s internal store also increases.
Potential store
- The energy in an object's potential store comes from the potential energy stored in the bonds between particles.
Test yourself on Internal Energy
Which of following are true of the relationship between temperature and energy?