# Oxidation

Combustion is an example of a type of reaction called . In an oxidation reaction, a substance gains oxygen. Metals and non-metals can take part in oxidation reactions.

## Metals

Metals react with oxygen in the air to produce metal oxides. For example, magnesium reacts with oxygen to produce magnesium oxide when it is heated in air:

magnesium + oxygen → magnesium oxide

2Mg + O2 → 2MgO

Magnesium reacts vigorously with oxygen to produce magnesium oxide

Metal oxides are they react with acids and them. Some metal oxides dissolve in water to produce solutions.

## Non-metals

Non-metals react with oxygen in the air to produce non-metal oxides. Here are two examples for the non-metals carbon and sulfur.

Carbon reacts with oxygen to form carbon dioxide:

carbon + oxygen → carbon dioxide

C + O2 → CO2

Sulfur burns reacts with oxygen to form sulfur dioxide:

sulfur + oxygen → sulfur dioxide

S + O2 → SO2

Non-metal oxides are – they react with bases and neutralise them. Some non-metal oxides dissolve in water to produce solutions.