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. False

2. False

3. don't know

4. don't know

Answer 2

Answer:

1) False

2) False

3) True

4) False

5) True

6) True

Explanation:

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