4.4.1.1–4.4.1.2 · Reactivity of Metals
What is oxidation and reduction in terms of oxygen?
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Oxidation is gain of oxygen. Reduction is loss of oxygen.
AQA GCSE Chemistry · Topic 4
Chemical Changes flashcards
59 cards on Chemical Changes, every one written against a numbered point in section 4.4 of the AQA Chemistry spec. Here’s what the topic covers, and 4 cards to try.
- 59Flashcards
- 10Sub-topics
- 14Higher only
- 4Triple only
Try 4 cards from Chemical Changes.
Answer each one in your head, then check. In the app, how well you knew it decides when you see it again.
4.4.1.4 · Redox in Terms of Electrons
What are oxidation and reduction in terms of electrons?Higher
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OIL RIG: Oxidation Is Loss of electrons, Reduction Is Gain of electrons.
4.4.2.3 · Making Soluble Salts
How do you make a soluble salt from an acid and an insoluble base?
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- Warm the acid and add the insoluble solid (metal, oxide, hydroxide or carbonate) until no more reacts (excess)
- Filter off the excess solid
- Heat the filtrate to evaporate some water, then leave to crystallise
- Filter and dry the crystals
4.4.2.6 · Strong & Weak Acids
What is a strong acid? Give three examples.Higher
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An acid that is completely ionised in aqueous solution. Hydrochloric, nitric and sulfuric acid.
- +55more Chemical Changes cards in the app, shown to you just before you’d forget them.Join the waitlist →
What’s in Chemical Changes?
Every part of section 4.4 of the AQA spec, and how many cards cover it. Higher-only cards are hidden for Foundation students. Cards only on the separate Chemistry GCSE are hidden for Combined Science.
- 4.4.1.1–4.4.1.2Reactivity of Metals7 cards
- 4.4.1.3Extracting Metals5 cards
- 4.4.1.4Redox in Terms of Electrons4 cards
- 4.4.2.1–4.4.2.2Reactions of Acids7 cards
- 4.4.2.3Making Soluble Salts5 cards
- 4.4.2.4pH & Neutralisation5 cards
- 4.4.2.5TitrationsTriple only4 cards
- 4.4.2.6Strong & Weak Acids5 cards
- 4.4.3.1–4.4.3.3Electrolysis7 cards
- 4.4.3.4–4.4.3.5Electrolysis of Solutions10 cards
Required practicals in this topic.
The method, the variables and a worked example for each.
Launching November 2026
The other 55 cards are in the app.
revolve. shows you each Chemical Changes card just before you’d forget it, so ten minutes a day is enough. It opens to students soon: join the waitlist and we’ll email you once, when it does.