Question

please Ans this question​

Answer 1

Answer:

1. permanent

2. reversible

3. reversible

4. combustion, natural

Explanation:

1. irreversible change cannot reverse

2. it can get in it's original form

3. we can change the shape of iron rod to its last shape using machine

4. it is combustion chemical reaction because the fuel catches fire rapidly,

iron molecules react with oxygen molecules and uron oxides