English National Curriculum - Science Science

2. Explore introducing electrolysis

Mission Objectives

Explain why ionic compounds can conduct electricity when molten or dissolved in water

Describe the reactions taking place at the positive and negative electrodes during electrolysis

Describe the reactions as either reduction or oxidation

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Keywords

Words and meanings to learn

anode

An electrode which is positively charged leading to electrons withdrawing from an electrical device.

cathode

An electrode which is negatively charged leading to electrons going into an electrical device.

extraction

To remove something from a material.

aluminium

The chemical element of atomic number 13, a light silvery-grey metal.

cryolite

Mineral containing a fluoride of aluminium and sodium which is white.

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