Question

Answer these two questions. ​

Answer 1

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Question 1

a) Here we observe a chemical change because we can't turn the part which turned brown back to its original state. It is termed as Rancidity.

b) This change is caused due to the oxidation of the vegetables due to exposure to air, we may see packets of potato chips filled with Nitrogen and this is to prevent rancidity.

c) The name of the process involved in this reaction is called as Oxidation reaction. An oxidation reaction is a type of reaction where a substance gains oxygen.

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Question 2

a) Here we may expect Rusting and Displacement Reaction.

The deposition of ferric hydroxide and ferric oxide when iron is exposed to moisture and air is called rusting. And when a less reactive element is displaced by a more reactive element, then it is called as a displacement reaction (AB ➝ A+B).

b) It is a chemical change since the chemical properties and composition of the elements get changed. It is an irreversible change and new compounds are formed in this reaction.

c) $\sf CuSO_4+Fe\longrightarrow FeSO_4+Cu$

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Answer 2

Hello !

1.a) Here we observe a chemical change because we can't turn the part which turned brown back to its original state. It is termed as Rancidity.

b) This change is caused due to the oxidation of the vegetables due to exposure to air, we may see packets of potato chips filled with Nitrogen and this is to prevent rancidity.

c) The name of the process involved in this reaction is called as Oxidation reaction. An oxidation reaction is a type of reaction where a substance gains oxygen.

2.a) Here we may expect Rusting and Displacement Reaction.

The deposition of ferric hydroxide and ferric oxide when iron is exposed to moisture and air is called rusting. And when a less reactive element is displaced by a more reactive element, then it is called as a displacement reaction (AB ➝ A+B).

b) It is a chemical change since the chemical properties and composition of the elements get changed. It is an irreversible change and new compounds are formed in this reaction.

c) CuSO4 + Fe =FeSO4 +Cu

Hope It Helps u :)