A2 Chemistry Definitions

Across

• 1. Stereoisomers that are non-superimposable mirror images of each other; also called ‘enantiomers’ (7, 7)
• 6. A negatively charged ion (5)
• 7. Atoms of the same element with different numbers of neutrons and different masses (8)
• 8. A compound containing amino acids linked by peptide bonds. Often the number of amino acids is indicated by the prefix, di-, tri-, tetra-: dipeptide = 2 amino acids tripeptide = 3 amino acids tetrapeptide = 4 amino acids (7)
• 9. The power to which the concentration of the reactant is raised in the rate equation (5)
• 10. A crystalline compound containing water molecules (8)