Question

1. The chemical formula of iron oxide ......

2. Melting of wax is a ............ change

3. A ........ is the smallest particle of an element or a compound that can exist by itself

4. Two atoms of an element combine to form a ......

5. Common salt is produced from sea water by the process of .....................

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Answer 1

1. Physical

2. Atom

3. Molecule

4. Evaporation

Please mark as branliest. I need that.

Answer 2

Fe2O3 or FeO or Fe3O4

Physical

Atom

Compound

Evaporation