Alkenes react with the halogens chlorine, bromine and iodine. Alkenes also react with oxygen in combustion reactions.
Name the functional group that all alkenes contain.
Ethene reacts with iodine. Give the molecular formula of the product.
Complete and balance the equation for the complete combustion of ethene by writing a number in each of the three spaces.
C2H4\text{C}_2\text{H}_4C2H4 + ....... O2\text{O}_2O2 gives ....... CO2\text{CO}_2CO2 + ....... H2O\text{H}_2\text{O}H2O