Converse of object

• exhibit: In fact the situation is even more complicated than it looks, because but-2-ene exhibits geometric isomerism.

• call: It is an example of structural isomerism, and is also called nuclear isomerism.

• show: Isomerism in the alkenes Structural isomerism All the alkenes with 4 or more carbon atoms in them show structural isomerism.

Adjective modifier

• geometrical: In AS and A2 Chemistry, we only need to know about geometrical isomerism caused by a C=C bond in the molecule.

• geometric: For a full discussion of geometric isomerism follow this link.

• optical: Note: One of the worrying things about optical isomerism is the number of obscure words that suddenly get thrown at you.

• structural: In structural isomerism, the atoms are arranged in a completely different order.

• positional: Positional isomerism, an example of structural isomerism, occurs when functional groups are in different positions on the same carbon chain.

Noun used with modifier

• chain: Chain isomerism is the type of isomerism you meet in GCSE Chemistry - see the isomers of hexane.

• position: You can easily have a mixture of chain isomerism and position isomerism - you aren't restricted to one or the other.

• trans: Geometric isomerism ( also known as cis / trans isomerism ) is a form of stereoisomerism.