1. Inorganic compound
Natural inorganic compounds are what make up the earth and have no life.
They can be divided into four groups: gaseous, liquid, mineral and rock.
- The main gaseous compounds are the air and the carbon dioxide.
- The most important liquid compounds are water and oil.
- The main mineral compounds are salt, iron, gold, silver and diamonds.
- The main rock compounds are marble, gypsum, sand and clay.
2. Notes if these compounds are gaseous, liquid, mineral or rock: