Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What is a pure substance?
   • A pure substance is a single element or compound, not mixed with any other substance.
2. What is a formulation?
   • A formulation is a mixture that has been designed to have distinct properties and be used as a useful product.
3. What can be used to distinguish between pure substances and mixtures?
   • Use Melting point and boiling point data to distinguish between pure substances and mixtures?
4. What are examples of formulations?
   • Formulations: fuels, cleaning agents, paints, medicines, alloys, fertilisers and foods.
5. What is a pure substance in everyday language?
   • A pure substance can mean a substance that has had nothing added to it, so it is unadulterated and in its natural state, eg pure milk.
6. How are formulations made?
   • They are made by mixing the components in carefully measured quantities to ensure that the product has the required properties.