Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What does the reactivity of a metal depend on?
   • The reactivity of a metal is related to its tendency to form positive ions.
2. How can the reactivity of group 1 metals be compared using a practical investigation?
   • Group 1 metal reactivity can be compared by observing their reactivity with water and dilute acids qualitatively by looking at the amount of gas produced using a magnifying glass or quantitatively by measuring the temperature changes.
3. What happens when a metal reacts with oxygen?
   • Metals react with oxygen to produce metal oxides.
4. What happens to metals in an oxidation reaction?
   • In oxidation reactions metals gain oxygen and looses electrons.
5. What is meant by the term 'reduction'?
   • Reduction is the loss of oxygen and gain of electrons.
6. What happens in terms of electrons during reduction and oxidation reactions?
   • During oxidation reactions substances loose/donate electrons and in reduction reactions substanced gain electrons.
7. Why is potassium more reactive than lithium?
   • Potassium is more reactive than lithium because it can form a postive ion easier. This is because the attraction between the outside electron and the nuclues is far lower in potassium than lithium. This is because potassium is a bigger atom with more electron shells, creating more sheilding of the electrostatic attraction.