4:21

4:21 understand how to draw the structural and displayed formulae for alkanes with up to five carbon atoms in the molecule, and to name the unbranched-chain isomers

The displayed formulae show all the atoms and bonds drawn out.

The molecular formulae just show the number of each type of atom in the molecule.

Spec	Q'stion	Ans	MS
4:21	Jan '14 (1), Q 6 d i	Answer	MkS
4:21	Jan '14 (2), Q 5 c ii	Answer	MkS
4:21	Jan '15 (1), Q 7 e	Answer	MkS
4:21	Jan '18 (1), Q 14 e ii	Answer	MkS
4:21	May '11 (1), Q 8 a i	Answer	MkS
4:21	May '11 (1), Q 8 a ii	Answer	MkS
4:21	May '11 (1), Q 8 a iii	Answer	MkS
4:21	May '11 (1), Q 8 a iv	Answer	MkS
4:21	May '11 (1), Q 8 d	Answer	MkS
4:21	May '12 (1), Q 7 a ii	Answer	MkS
4:21	May '13 (1), Q 6 a	Answer	MkS
4:21	May '13 (1R), Q 5 b	Answer	MkS
4:21	May '13 (2R), Q 5 b ii	Answer	MkS
4:21	May '13 (2R), Q 5 b iv	Answer	MkS
4:21	May '14 (1), Q 9 c ii	Answer	MkS
4:21	May '15 (1), Q 5 d	Answer	MkS
4:21	May '15 (1), Q 5 e i	Answer	MkS
4:21	May '15 (1), Q 5 e ii	Answer	MkS
4:21	May '17 (1), Q 6 c iii	Answer	MkS
4:21	May '17 (1R), Q 11 b ii	Answer	MkS
4:21	May '17 (1R), Q 11 b iii	Answer	MkS
4:21	May '17 (1R), Q 11 c ii	Answer	MkS