Question

classify as physical and chemical change
1. rusting of iron
2.crystallization ​

Answer 1

Answer:

Both are chemical changes............

Answer 2

Rusting of Iron :-

• It is a chemical change.

Iron (Fe) + Oxygen (O2) + Water (H2O) → Rust (Iron Oxide,Fe2O3)

Crystallization :-

• It is a physical change.