Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What happens during a displacement reaction?
   • In a displacement reaction a more reactive metal can displace a less reactive metal from a compound.
2. What would the independent, dependent and control variables be for a quantitative investigation into the reactivity of metals?
   • To investigate the reactivity of metals quantitatively the independent variable would be the type of metal. The dependent variable would be the temperature increase. The control variables would be the surface area of the metal, the volume and concentration of the water/acid, the temperature of the reactants and the mass of the metal.
3. Where in the reactivity series does carbon appear and which elements can be displaced by carbon?
   • The order of reactivity including non metals is: Pottassium, sodium, lithium, calcium, magnesium, aluminium, carbon, zinc, iron, hydrogen, copper, silver, gold. Only elements below carbon in the reactivity series can be displaced by carbon.
4. What conditions are standard when investigating the reactivity of metals with water and acids?
   • The reactions of metals with water and acids are limited to room temperature and do not include reactions with steam.
5. What is the list of metals (and non-metals) in the reactivity series, from most reactive to least reactive?
   • Potassium, sodium, lithium, calcium, magnesium, aluminium, carbon, zinc, iron, hydrogen, copper, silver, gold.
6. How do each of the following metals react with each of water and dilute acids: potassium, sodium, lithium, calcium, magnesium, zinc, iron and copper?
   • Lithium, sodium and potassium have vigorous reactions with cold water and explosive reactions with dilute acids. Calcium, magnesium have less vigorous reactions with water and dilute acids but it is possible to see gas being produced. Zinc, iron and copper have far less vigorous reactions, decreasing in reactivity.
7. Write the ionic equation for the displacement reaction between copper ions and magnesium
   • The equation for the displacement reaction between copper ions and magnesium is: Cu2 Mg --> Mg2 Cu