Question

IV. Long answer type questions.

1. Describe how the three physical states of water can be changed from one state to another.

2. Which type of change, reversible or irreversible, takes place in each of the following cases?
Give reasons for each.

a. Ripening of fruits
b. Melting of ice cream
c. Tearing of paper
d. Curdling of milk​

Answer 1

Answer:

(1)

This figure demonstrates how the addition of heat can convert solid ice to liquid water through the process of melting, and with additional heat, the liquid water can be converted into gas (water vapor). ... Likewise, cooling converts liquid water to solid ice through the process of freezing

(2). Melting of ice cream is an example of a reversible change.

Ripening of fruits is an example of an irreversible change.

Tearing of paper is a physical and irreversible change

Making curd from milk is a chemical and irreversible change

Answer 2

Explanation:

1) ice, water and water vapour

2)a) irreversible change, because a fruit cannot be raw again after it ripens

b) reversible change, because we can keep the melted ice cream in a freezer

c) irreversible change, because we cannot join the pieces of paper.

d) irreversible change, we cannot change the curlded curd again to normal curd

sorry, for spelling mistakes

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