C4 CHEMICAL REACTIONS

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

oxidation/reduction?

Back (Answer)

oxidation = gains oxygen reduction = loses oxygen

Front (Question)

what is the reactivity series of metals? what are the trends in reactivity metals in order with acids/water

Back (Answer)

the series shows the metal in order of their reactivity metals above H2 in the series react with acid to produce H2 . the more reactive the metal is , the quicker and more violent reaction with acid occurs. metals below H2 in the series don’t react with acids. not all metals above H2 react with water - mostly group 1 and group 2 metals. aluminium is the border case.

Front (Question)

displacement reaction?

Back (Answer)

when a more reactive metal displaces a less reactive metal from a compound

Front (Question)

how are unreactive metals found in Earth?

Back (Answer)

in their natural state

Front (Question)

how can metals be less reactive than carbon be extracted

Back (Answer)

reduction with carbon carbon displaces the metal in a metal oxide - gets oxidised to carbon oxides metal from the metal oxide gets reduced to the pure metal

Front (Question)

how are metals more reactive than carbon extracted

Back (Answer)

by electrolysis

Front (Question)

oxidation and reduction in terms of electrons?

Back (Answer)

oxidation - loss of electron reduction - gain of electron Oxidation Is Loss Reduction Is Gain

Front (Question)

equation for metal and acid?

Back (Answer)

metal + acid –> salt + hydrogen

Front (Question)

equation for metal oxide and acid

Back (Answer)

metal oxide + acid –> salt + water

#10

Front (Question)

equation for metal oxide and acid

Back (Answer)

metal oxide + acid –> salt + water

#11

Front (Question)

equation for metal hydroxide and acid

Back (Answer)

metal hydroxide + acid –> salt + water

#12

Front (Question)

equation for metal hydroxide and acid

Back (Answer)

metal hydroxide + acid –> salt + water

#13

Front (Question)

equation for metal carbonate and acid

Back (Answer)

metal carbonate + acid –> salt + water + carbon dioxide

#14

Front (Question)

equation for metal carbonate and acid

Back (Answer)

metal carbonate + acid –> salt + water + carbon dioxide

#15

Front (Question)

which metals in the reactivity series will react with acid?

Back (Answer)

those above hydrogen

#16

Front (Question)

general equation for neutralisation

Back (Answer)

base + acid –> salt + water

#17

Front (Question)

redox equation?

Back (Answer)

both oxidation and reduction occurs

#18

Front (Question)

base?

Back (Answer)

any substance that reacts with an acid to form a salt and water only. compounds that neutralise acids

#19

Front (Question)

explain in terms of gain or loss of electrons which species have been oxidised and which species has been reduced when magnesium reacts with hydrochloric acid

Back (Answer)

magnesium has lost electrons and thus has been oxidised (Mg to Mg2+) hydrogen in HCl has gained electrons and thus have been reduced (H+ to H2)

#20

Front (Question)

explain in terms of gain or loss of electrons which species have been oxidised and which species has been reduced when magnesium reacts with hydrochloric acid

Back (Answer)

magnesium has lost electrons and thus has been oxidised (Mg to Mg2+) hydrogen in HCl has gained electrons and thus have been reduced (H+ to H2)

#21

Front (Question)

how is a soluble salt formed?

Back (Answer)

react to the excess acid with some insoluble chemical (e.g metal oxide) filter off the leftovers crystallise the product

#22

Front (Question)

what do acids and alkalis produce in aqueous solution?

Back (Answer)

acid produces hydrogen ions alkalis produce hydroxide ions

#23

Front (Question)

what are acids?

Back (Answer)

produce hydrogen ions in aqueous solution

#24

Front (Question)

what are alkalis?

Back (Answer)

soluble bases produce hydroxide ions in aqueous solution