AQA GCSE COMBINED SCIENCE TRILOGY
8464 C 1H HIGHER TIER CHEMISTRY PAPER 1H
COMPREHENSIVE EXAMINATION TEST 2026
QUESTIONS WITH ANSWERS 100% CORRECT
◉ choosing a source, filtering and sterilising the water. Answer:
potable water is produced by:
◉ desalination may be used. Answer: if fresh water supplies are
limited...
◉ removing salt from sea water. Answer: desalination involves...
◉ reverse osmosis or distillation. Answer: water can be desalinated
using...
◉ lots of energy. Answer: water desalination requires...
◉ lots of waste water. Answer: city lifestyles and industry produce...
◉ treated before it is released into the environment. Answer: waste
water needs to be...
,◉ harmful microbes and organic matter. Answer: for sewage and
agricultural waste water, you need to remove...
◉ organic matter and harmful chemicals. Answer: for industrial
waste water, you need to remove...
◉ pollute waterways. Answer: sewage needs to be treated so it
doesn't...
◉ remove large objects. Answer: treating sewage: screening and grit
removal are used to...
◉ separate sewage sludge and effluent. Answer: treating sewage:
sedimentation is used to...
◉ break down sewage sludge using micro-organisms. Answer:
treating sewage: anaerobic digestion is used to...
◉ break down effluent using micro-organisms. Answer: treating
sewage: aerobic biological treatment is used to...
◉ solid waste. Answer: sludge is...
,◉ liquid sewage. Answer: effluent is...
◉ crimson. Answer: flame tests: Li
◉ yellow. Answer: flame tests: Na
◉ lilac. Answer: flame tests: K
◉ red. Answer: flame tests: Ca
◉ green. Answer: flame tests: Ba
◉ white. Answer: silver nitrate precipitate test: Cl
◉ cream. Answer: silver nitrate precipitate test: Br
◉ yellow. Answer: silver nitrate precipitate test: I
◉ white, dissolves in excess NaOH. Answer: NaOH precipitate test: Al
◉ blue. Answer: NaOH precipitate test: Cu
, ◉ white. Answer: NaOH precipitate test: Mg
◉ white. Answer: NaOH precipitate test: Ca
◉ brown. Answer: NaOH precipitate test: Fe³⁺
◉ green. Answer: NaOH precipitate test: Fe²⁺
◉ symbol for solid. Answer: s
◉ symbol for liquid. Answer: l
◉ symbol for gas. Answer: g
◉ symbol for aqueous solution. Answer: aq
◉ the only true liquid. Answer: water
◉ formula to find mean rate of reaction (using quantity of reactant
used). Answer: RoRxn = quantity of reactant used ÷ time
8464 C 1H HIGHER TIER CHEMISTRY PAPER 1H
COMPREHENSIVE EXAMINATION TEST 2026
QUESTIONS WITH ANSWERS 100% CORRECT
◉ choosing a source, filtering and sterilising the water. Answer:
potable water is produced by:
◉ desalination may be used. Answer: if fresh water supplies are
limited...
◉ removing salt from sea water. Answer: desalination involves...
◉ reverse osmosis or distillation. Answer: water can be desalinated
using...
◉ lots of energy. Answer: water desalination requires...
◉ lots of waste water. Answer: city lifestyles and industry produce...
◉ treated before it is released into the environment. Answer: waste
water needs to be...
,◉ harmful microbes and organic matter. Answer: for sewage and
agricultural waste water, you need to remove...
◉ organic matter and harmful chemicals. Answer: for industrial
waste water, you need to remove...
◉ pollute waterways. Answer: sewage needs to be treated so it
doesn't...
◉ remove large objects. Answer: treating sewage: screening and grit
removal are used to...
◉ separate sewage sludge and effluent. Answer: treating sewage:
sedimentation is used to...
◉ break down sewage sludge using micro-organisms. Answer:
treating sewage: anaerobic digestion is used to...
◉ break down effluent using micro-organisms. Answer: treating
sewage: aerobic biological treatment is used to...
◉ solid waste. Answer: sludge is...
,◉ liquid sewage. Answer: effluent is...
◉ crimson. Answer: flame tests: Li
◉ yellow. Answer: flame tests: Na
◉ lilac. Answer: flame tests: K
◉ red. Answer: flame tests: Ca
◉ green. Answer: flame tests: Ba
◉ white. Answer: silver nitrate precipitate test: Cl
◉ cream. Answer: silver nitrate precipitate test: Br
◉ yellow. Answer: silver nitrate precipitate test: I
◉ white, dissolves in excess NaOH. Answer: NaOH precipitate test: Al
◉ blue. Answer: NaOH precipitate test: Cu
, ◉ white. Answer: NaOH precipitate test: Mg
◉ white. Answer: NaOH precipitate test: Ca
◉ brown. Answer: NaOH precipitate test: Fe³⁺
◉ green. Answer: NaOH precipitate test: Fe²⁺
◉ symbol for solid. Answer: s
◉ symbol for liquid. Answer: l
◉ symbol for gas. Answer: g
◉ symbol for aqueous solution. Answer: aq
◉ the only true liquid. Answer: water
◉ formula to find mean rate of reaction (using quantity of reactant
used). Answer: RoRxn = quantity of reactant used ÷ time