After this lesson, you should be able to:

• Identify elements and compounds in chemical reactions
• Describe a molecule as a group of atoms bonded covalently
• Represent molecules using a molecular formula or an empirical formula for covalent network structures
• Give the formula of a molecule from a diagram of the molecule and vice-versa
• Give examples of molecules, ionic substances and metals
• Recognize molecules from models
• Draw diagrams to represent molecules