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Respiration

Respiration i...

Question

Respiration is a chemical change because:

A

new substances are formed.

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B

change in mass.

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C

Both a and b

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D

change is temporary.

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Solution

The correct option is C Both a and b
Respiration is a chemical change as new substances like carbon dioxide and water are formed. Also there is change in the mass as glucose is oxidised by oxygen and heat is released. This change is permanent. All these factors conclude that respiration is a chemical change.

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