Question

i. Write any two evidences to show that the above change is chemical in nature. ii. Write an importance of a chemical change in our daily life.

Answer 1

Answer:

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Answer 2

Answer:

i: Chemical reactions are how new forms of matter are made. While nuclear reactions also may produce new matter, nearly all the substances you encounter in daily life are the result of chemical changes. Chemical reactions help us understand the properties of matter

ii: The following can indicate that a chemical change has taken place, although this evidence is not conclusive: Change of odor. Change of color (for example, silver to reddish-brown when iron rusts). Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat.

Explanation:

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