5.4—The reactions of alkenes

Be able to describe the reactions of alkenes, limited to: i the addition of hydrogen, using a nickel catalyst, to form an alkane ii the addition of halogens to produce a di-substituted halogenoalkane iii the addition of hydrogen halides to produce mono-substituted halogenoalkanes iv the addition of steam, in the presence of an acid catalyst, to produce alcohols v oxidation of the double bond by acidified potassium manganate(VII) to produce a diol.

Use —the reactions of alkenes to connect the rule to the data and decision in the question.

This matters because —the reactions of alkenes determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —the reactions of alkenes to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —The reactions of alkenes is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.