AQA GCSE COMBINED SCIENCE STUDY SHEET 2026 ACCURATE SOLUTION COLLECTION

AQA GCSE COMBINED SCIENCE STUDY
SHEET 2026 ACCURATE SOLUTION
COLLECTION

◉ problem with many things humans use in everyday life.
Answer: made from limited raw materials, and the energy used to
process these comes from limited resources


◉ problem with accessing raw materials in the first place.
Answer: causes environmental issues from mining or quarrying


◉ how a reaction stops.
Answer: when all the particles of one of the reactants are used


◉ limiting reactant.
Answer: the first reactant to be used up


◉ what the limiting reactant does.
Answer: limits the amount of product that can be formed


◉ how to ensure all the limiting reactant has reacted.

,Answer: use an excess of other reactants


◉ relationship between amount of product formed and amount of
limiting reactant used.
Answer: directly proportional


◉ metal + oxygen ➜.
Answer: metal oxide


◉ metal + oxygen reaction type.
Answer: oxidation


◉ oxidation.
Answer: gaining oxygen or losing electrons


◉ reduction.
Answer: losing oxygen or gaining electrons


◉ OIL RIG.
Answer: Oxidation Is Loss of electrons, Reduction Is Gain of
electrons

, ◉ how elements form compounds.
Answer: their atoms join with other atoms, which involves taking,
giving or sharing electrons


◉ metal ions.
Answer: positive


◉ ion formed by loss of electrons.
Answer: positive


◉ ion formed by gain of electrons.
Answer: negative


◉ displacement.
Answer: more reactive metals displace less reactive metals from
their compounds


◉ metal + water ➜.
Answer: metal hydroxide + hydrogen


◉ metal + hydrochloric acid ➜.
Answer: metal chloride + hydrogen