(a(i))[2]
Draw a dot-and-cross diagram to represent the electron arrangement in a carbon dioxide molecule. Include only the outer shell electrons.
(a(ii))[2]
Describe the motion and spacing of the particles in a gas. movement spacing
(b(i))[1]
Name the products formed in photosynthesis.
(b(ii))[1]
Some of the reactions in photosynthesis use enzymes. State what is meant by the term enzyme.
(c(i))[1]
Name the other product formed when hydrocarbons undergo complete combustion.
(c(ii))[1]
The paraffin (kerosene) fraction obtained from the fractional distillation of petroleum (crude oil) contains hydrocarbons. State one use of the paraffin (kerosene) fraction.