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A Level H2 Chemistry (9729) Past Year Questions Trend

The following is a compilation of all the A Level H2 Chemistry marks allocation across the past ten years series (2010-2019).

Note Introduction to Transition Elements is not tested for A Level as part of the common last topic.

Past Year Topic Trend Heat Map (Full Paper)

Some observations can be made for the H2 Chemistry full paper:

Halogen derivatives, chemical energetics, reaction kinetics and electrochemistry remain very popular topics to be tested across the years.
The gaseous state, hydrocarbons and the mole concept and stoichiometry are the least popular topics to be tested across the years.
Atomic structure, chemical bonding, seem to be tested more frequently in recent years.
Nitrogen compounds seem to be tested less frequently in recent years, but remain a popular topic.

Some observations can be made for the H2 Chemistry paper 1:

The periodic table, carboxylic acids and derivatives, electrochemistry remain very popular topics to be tested across the years.
Atomic structure, chemical equilibria and the gaseous state are the least popular topics to be tested across the years.
Carboxylic acids and derivatives, nitrogen compounds seem to be tested more frequently in recent years.
Hydroxyl compounds seem to be tested less frequently in recent years, but remain a popular topic.

Some observations can be made for the H2 Chemistry paper 2:

Halogen derivatives, carboxylic acids and derivatives, hydroxyl compounds remain very popular topics to be tested across the years.
Atomic structure, hydrocarbons and the gaseous state are the least popular topics to be tested across the years.
Chemical bonding, organic chemistry introduction and isomerism seem to be tested more frequently in recent years.
Hydroxyl compounds seem to be tested less frequently in recent years, but remain a popular topic.

Some observations can be made for the H2 Chemistry paper 3:

Carbonyl compounds, carboxylic acids and derivatives, the periodic table remain very popular topics to be tested across the years.
The mole concept and stoichiometry, organic chemistry introduction and isomerism and reaction kinetics are the least popular topics to be tested across the years.
Chemical bonding seems to be tested more frequently in recent years.
Atomic structure seem to be tested less frequently in recent years, but remain a popular topic.

The following is the same yearly distribution of marks across the topics for H2 Chemistry full paper, presented in bar chart format.

Refer to above heat map for comments.

The following is the same yearly distribution of marks across the topics for H2 Chemistry paper 1, presented in bar chart format.

Refer to above heat map for comments.

The following is the same yearly distribution of marks across the topics for H2 Chemistry paper 2, presented in bar chart format.

Refer to above heat map for comments.

The following is the same yearly distribution of marks across the topics for H2 Chemistry paper 3, presented in bar chart format.

Refer to above heat map for comments.