Answer:
Physical Changes:
Solid is distinguished by a fixed structure. Its shape and volume do not change. In a solid, atoms are tightly packed together in a fixed arrangement.
Liquid is distinguished by its malleable shape (is able to form into the shape of its container), but constant volume. In a liquid, atoms are close together but not in a fixed arrangement.
Gas is made up of atoms that are separate. However, unlike solid & liquid, a gas has no fixed shape and volume.
Chemical changes:
Corrosion is the unwanted oxidation of metals resulting in metal oxides.
Explanation:
