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Chemical stores of energy are places where energy is kept inside materials like food, fuels, and batteries. This type of energy is called chemical energy, and it is stored in the chemical bonds — the tiny forces that hold atoms together in molecules. These bonds act like invisible glue, and inside them is where the energy is hidden. We can’t see this energy, but it is there, and we can use it when we need it. To release this energy, a chemical reaction must happen. This is when a substance changes into something new, and during that change, the energy is set free.

Here are some examples of where we find chemical stores of energy:

• In food: Your body stores energy from food and uses it to do everything — walking, thinking, running, even breathing. When you eat, your body breaks the food down in a chemical reaction and takes the energy out.

• In fuels: Substances like petrol, diesel, natural gas, and coal all store a lot of chemical energy. When we burn these fuels, they go through a chemical reaction and release heat and light. This energy is used to power cars, buses, power stations, and even airplanes.

• In batteries: Batteries store chemical energy too. Inside a battery, there are special chemicals that react with each other when the battery is being used. This reaction produces electricity, which powers phones, torches, remote controls, and other devices.

• In wood or gas for heating: When we burn wood, gas, or other materials in a fire or a stove, the chemical energy in them is released as heat and light. This helps us stay warm or cook food.

All of these are examples of chemical stores of energy. The energy stays locked inside the substance until we need it. When we cause a chemical reaction — like eating food, burning fuel, or using a battery — the energy is released. This energy can then be changed into other types of energy, such as heat, movement, or electricity.

So, chemical energy is one of the most important ways we store and use energy in everyday life. It is hidden in the materials around us and becomes useful when we find a way to release it through a chemical reaction.