Question 1

Loss of electrons

Accepted Answer

Oxidation

Question 2

Gain of electrons

Accepted Answer

Reduction

Question 3

When a more reactive element takes the place of a less reactive element in a compound

Accepted Answer

Displacement reaction

Question 4

A reaction where both oxidation and reduction occur

Accepted Answer

Redox reaction

Question 5

Substance that produces hydrogen ions (H⁺) in water

Accepted Answer

Acid

Question 6

Substance that produces hydroxide ions (OH⁻) in water

Accepted Answer

Alkali

Question 7

An acid which is fully ionised (split into ions) in water

Accepted Answer

Strong acid

Question 8

An acid in which only a few molecules are ionised

Accepted Answer

Weak acid

Question 9

A solution containing a small amount of dissolved solute

Accepted Answer

Dilute

Question 10

A solution containing a lot of dissolved solute

Accepted Answer

Concentrated

Question 11

Reaction between an acid and an alkali forming water.

Accepted Answer

Neutralisation

Question 12

Splitting up an ionic compound using electricity

Accepted Answer

Electrolysis

Question 13

A liquid or solution that can be split up by electricity

Accepted Answer

Electrolyte

Question 14

Material used to introduce electricity into a conductive substance.

Accepted Answer

Electrode

Question 15

Gain or loss of electrons at an electrode to form atoms or molecules.

Accepted Answer

Discharge

Question 16

Positive electrode in electrolysis (where oxidation occurs)

Accepted Answer

Anode

Question 17

Negative electrode in electrolysis (where reduction occurs)

Accepted Answer

Cathode

Question 18

Electrodes that do not react during electrolysis (often graphite)

Accepted Answer

Inert electrode

Question 19

H⁺(aq) + OH⁻(aq) → H₂O(l)

Accepted Answer

Ionic equation for neutralisation

Question 20

→ salt + water

Accepted Answer

Acid + Base

Question 21

→ salt + water + carbon dioxide

Accepted Answer

Acid + Carbonate

Question 22

→ salt + hydrogen

Accepted Answer

Acid + Metal

Question 23

→ ammonium salt

Accepted Answer

Acid + Ammonia

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