Question

Can anyone from GCE Cambridge O'levels can answer it:
Explain me the whole topic of Energy of Chemicals. It is so complicated!!!

Answer 1

Answer:

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Answer 2

Explanation:

• Chemical energy is energy stored in the bonds of chemical compounds, like atoms and molecules. This energy is released when a chemical reaction takes place.
• Usually, once chemical energy has been released from a substance, that substance is transformed into a completely new substance.
• Chemical energy is stored in the bonds that connect atoms with other atoms and molecules with other molecules. Because chemical energy is stored, it is a form of potential energy.
• When a chemical reaction takes place, the stored chemical energy is released.
• Heat is often produced as a by-product of a chemical reaction – this is called an exothermic reaction.
• The food we eat contains stored chemical energy. As the bonds between the atoms in food loosen or break, a chemical reaction takes place, and new compounds are created.
• The energy produced from this reaction keeps us warm, helps us move, and allows us to grow. Different foods store different amounts of energy.
• Dry wood contains stored chemical energy. When you burn that wood in a fireplace, chemical energy is released and converted into thermal energy (heat) and light energy.