Age 16 to 18
You may well find this problem difficult, as it requires three
dimensional visualisation of two dimensional images. If you cannot
manage this in your head, why not try:
-Using a free chemical drawing program, such as 'Chemsketch' to
draw and rotate the molecules.
-Using a modelling kit to construct the molecules, so that you can
rotate them to see if they can be superimposed.
-Try using your hands! This may prove difficult for molecules with