Applications of Elements and Compounds: What Each One Is For

In the paper

Unit 4 carries 3 of the 50 chemistry marks; with three chapters sharing them, this one averages one (MEC publishes weights by unit, not by chapter). It is pure recall — there is nothing to understand here, only a list to own — which makes it the cheapest mark in Chemistry and an unforgivable one to lose.

The MEC scope line runs: Inorganic: hydrogen and its isotopes, oxygen, ozone, heavy water, hydrogen peroxide, nitrogen, ammonia, nitric acid, sulphur, hydrogen sulphide, sulphur dioxide, sulphuric acid, hypo, halogens and halogen acids, carbon, carbon monoxide, phosphorus, phosphine, sodium, caustic soda, washing soda, baking soda, quick lime, slaked lime, bleaching powder, plaster of Paris, magnesia, Epsom salt, gypsum, copper, blue vitriol, black and red oxides of copper, zinc, white vitriol, mercury, calomel, corrosive sublimate, iron, silver chloride and silver nitrate. Organic: alkanes, alkenes, alkynes, aromatic hydrocarbons, chloroform, alcohols, phenol, aldehydes and ketones, ethers, haloarenes, carboxylic acids and derivatives, nitro compounds, amines, formalin, chloropicrin, chloretone, Grignard reagent. The two tables below are its points in MEC's order.