Question

Q.3 True and false.
1. Cutting a log of wood into pieces is a chemical change.
2. Iron and rust are the same substances.
3. The product of photosynthesis is not a protein.
4. Nitric acid turns red litmus blue.
5. Tooth decay is caused by the presence of a base.
6. Condensation of stream is not a chemical change.​

Answer 1

Answer:

1.true

2.false

3.true

4.true

5.false

6.true

Explanation:

please mark as the best answer

Answer 2

Explanation:

1.False

2.False

3.True

4.True

5.False

6.True