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.true 4.true 6.true