Atoms and the periodic table

Define an element and learn how different elements are represented by chemical symbols.

Define a compound, write compound formulae and name compounds based on the atoms they contain.

Understand the difference between physical and chemical changes and write equations using word and symbol equations.

Describe what is meant by 'conservation of mass' and apply this to chemical and physical changes.

Understand that elements have different properties and how the periodic table has been developed over time according to our knowledge of these properties.

Describe the common properties of metals and non-metals and how different uses relate to their properties.

Describe the physical and chemical properties of Group 1 metals and trends in their reactions with oxygen and water.

Describe the trends in reactivity of Group 7 elements and how they react with different Group 7 elements and elements from other groups.