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ICSE Class 8 Answered

Respiration in a chemical change
Asked by Ansariisaad8989 | 07 Mar, 2019, 10:33: PM
answered-by-expert Expert Answer


Food that we eat includes carbohydrates, proteins, vitamins etc.

During digestion, carbohydrates are broken down into simpler substances called glucose.

straight C subscript 6 straight H subscript 12 straight O subscript 6 space plus space 6 straight O subscript 2 space rightwards arrow with space space space on top space 6 CO subscript 2 space space plus space 6 straight H subscript 2 straight O space space plus space Energy

Glucose combines with oxygen in the cells of our body to form carbon dioxide and water along with energy.

This reaction is called respiration.

Since energy is released during this process, respiration is an exothermic reaction.    

Answered by Varsha | 08 Mar, 2019, 11:57: AM

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