On the grids below, plot the points to show how the named property changes for the Group IV elements. For each element, your points should show whether the melting point / electrical conductivity is 'high', 'medium' or 'low'. Silicon has already been plotted on each grid.
Suggest reasons for these patterns in terms of the structure and bonding of the Group IV elements: melting point; electrical conductivity.
Select one reaction to demonstrate each of the statements below. For each reaction you choose, write an equation and describe the observations as the reaction proceeds. $\text{PbO}$ is more stable than $\text{PbO}_2$.
Choose one reaction to demonstrate the statement below. For your chosen reaction, write an equation and describe the observations as the reaction proceeds. CO is easily oxidised to $\text{CO}_2$.
Choose one reaction to demonstrate the statement below. For your chosen reaction, write an equation and describe the observations as the reaction proceeds. Aqueous $\text{SnCl}_2$ is a useful reducing agent.