Question

state true or false 1.A new substance may or may not be formed during a chemical change.
2. Curdling of milk is considered a physical change.
3.On addition of sodium to water, hydrogen is evolved Hence the change is physical .
4.Exposure of iron to the moist atmosphere results in a chemical change.​

Answer 1

Answer:

1 t

2 f

3 f

4 t

Explanation:

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Answer 2

˙❥˙ANSWER ˙❥˙

1. True

2. False

3. False

4. True

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