A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.
Candles also possess a lot of chemical energy. So does petrol.
Some substances absorb heat energy and change it into chemical energy. They can be used to cool things by absorbing the heat energy.
Our food contains the chemical energy we need to live, grow and move.
Name three examples of other fuels that contain a lot of chemical energy.
Name a device that produces electrical energy from the chemical energy stored in it.
Name an unusual fuel that contains chemical energy, and is used in some developing countries to produce heat energy.
Name some foods that are known to be high energy foods.
Cow pats are collected and used in some countries as a fuel for cooking.
When some substances, such as ammonium nitrate, dissolve in water, they absorb heat energy and cool the solution. The heat energy is converted into chemical energy in the solution.
