The energy stored in substances like petrol and food is known as chemical energy. Here's a step-by-step explanation:

1. Chemical Energy: This is the energy stored in the bonds of chemical compounds (atoms and molecules). It is released in a chemical reaction, often producing heat as a by-product (exothermic reaction).

2. Petrol: In the case of petrol, the energy is stored in the bonds between the carbon and hydrogen atoms. When petrol is used as fuel in cars, it is combined with oxygen and ignited. This chemical reaction (combustion) breaks the bonds in the petrol molecules and forms new bonds in the resulting carbon dioxide and water vapor. The energy released in this process is used to power the car.

3. Food: Similarly, the energy in food is stored as chemical energy. Our bodies digest the food, breaking down the complex molecules into simpler ones and releasing the energy stored in the bonds. This energy is then used by our bodies to perform various functions, like moving our muscles, maintaining our body temperature, and keeping our brains functioning.

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The energy stored in substances like petrol and food is known as chemical energy. Here's a step-by-step explanation:

1. Chemical Energy: This is the energy stored in the bonds of chemical compounds (atoms and molecules). It is released in a chemical reaction, often producing heat as a by-product (exothermic reaction).

2. Petrol: In the case of petrol, the energy is stored in the bonds between the carbon and hydrogen atoms. When petrol is used as fuel in cars, it is combined with oxygen and ignited. This chemical reaction (combustion) breaks the bonds in the petrol molecules and forms new bonds in the resulting carbon dioxide and water vapor. The energy released in this process is used to power the car.

3. Food: Similarly, the energy in food is stored as chemical energy. Our bodies digest the food, breaking down the complex molecules into simpler ones and releasing the energy stored in the bonds. This energy is then used by our bodies to perform various functions, like moving our muscles, maintaining our body temperature, and keeping our brains functioning.

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The energy stored in substances like petrol and food is known as chemical energy. Here's a step-by-step explanation:

1. Chemical Energy: This is the energy stored in the bonds of chemical compounds (atoms and molecules). It is released in a chemical reaction, often producing heat as a by-product (exothermic reaction).

2. Petrol: In the case of petrol, the energy is stored in the bonds between the carbon and hydrogen atoms. When petrol is used as fuel in cars, it is combined with oxygen and ignited. This chemical reaction (combustion) breaks the bonds in the petrol molecules and forms new bonds in the resulting carbon dioxide and water vapor. The energy released in this process is used to power the car.

3. Food: Similarly, the energy in food is stored as chemical energy. Our bodies digest the food, breaking down the complex molecules into simpler ones and releasing the energy stored in the bonds. This energy is then used by our bodies to perform various functions, like moving our muscles, maintaining our body temperature, and keeping our brains functioning.

Energy stored in substances such as petrol and food.

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