Question

Q. 2 Answer in following in short
1) give one example to explain the difference between changes that can or cannot be reversed

2)in a completely dark room,if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?

3)what is shadow?

4)write some changes happening in our body

5)what is the direction of flow of the current in a dry cell ?.



plz answer in short.​

Answer 1

Answer:

Changes that cannot be reversed are Chemical changes

Changes that can be reversed are physical changes

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Answer 2

Q2 Ans 1 Water can be turned into ice by keeping it in the freezer

Ans 2No, we will not see our reflection in mirror in a dark room

Ans 3 A shadow is a dark area where light from a light source is blocked by an opaque object.

Ans 4 The changes that happening in our body are: (a) Our nails grow. (c) We grow taller. (4) Our weight increases.

Ans 5 The dry cell consists of a zinc can, electrolyte paste, and a carbon rod in the center.

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