Simple molecules and covalent bounds
1. Simple molecules:Simple molecules are small groups of atoms joined together. Example:
Water (H₂O) – has 2 hydrogen atoms and 1 oxygen atom.
Oxygen (O₂) – has 2 oxygen atoms.
Carbon dioxide (CO₂) – has 1 carbon and 2 oxygen atoms.
They are called simple because they have only a few atoms and are not very big.
2. Covalent bonds:A covalent bond is when atoms share electrons to stay together.
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