Question

Write 'T' for true and 'F' for false for the following statements.

1. A physical change is irreversible.

2. A chemical change is reversible.

3. The mass of a substance undergoing a physical change is not altered.

4. Heat is absorbed when glucose is dissolved in water.

5. Heat is evolved when concentrated hydrochloric acid is poured into water.

6. A mixture of iron and sulphur undergoes a chemical change when heated.​

Answer 1

Answer:

1 F, 2F and I don't know others

Answer 2

1. F

2. F

3. T

4. F

5. T

6. T