The environmental chemistry of water and air: water hardness, water and sewage treatment, water analysis, plus atmospheric gases, the greenhouse effect and the ozone layer.
35 past Chemistry questions on this topic, spanning 2015 to 2025, grouped by year. Every question opens on the exact page of the official paper, with its marking scheme beside it.
Every past question on this topic, taken from the official exam papers and set out for printing. Free, no sign-up.
thermochemistry, radioactivity, electrolysis
bonding, organic functional groups, iron extraction
Every past question on this topic, taken from the official exam papers and set out for printing. Free, no sign-up.
states of matter, mole calculations, stoichiometry
organic chemistry, hydrocarbons, homologous series, aromatic compounds
Questions come from the official State Examinations Commission papers. Every link opens the original PDF on examinations.ie. The topic packs reproduce the same questions unchanged, with the year, paper and question number printed on each one.