Chemical changes

Chemical changes


The Reactivity Series & Chemical Changes

Displacement reactions, extracting metals, salts from metals, neutalisation, ph scale

BBC Bitesize: Reactivity series
The reactivity series allows us to predict how metals will react.

BBC Bitesize: Reactions of metals
Iron and aluminium are extracted from their ores in various ways.

BBC Bitesize: Making salts
The salts made in neutralisation reactions can be either soluble or insoluble.

BBC Bitesize: Extracting iron
Extracting iron using a blast furnace, uses of iron and aluminium.

BBC Bitesize: Thermal decomposition
A reaction in which a substance is broken down into at least two other substances by heat is called thermal decomposition.

Science School: Copper recycling
Benefits of recycling copper.

BBC Bitesize: Phytoextraction (phytomining)
Plants absorb mineral ions through their roots. Phytoextraction makes use of this.

BBC Bitesize: Chemical changes quiz
Test your knowlege on reactions with metals, acids, alkalis and salts, titrations.


Electrolysis

Changes at the electrodes, extraction of aluminium, aqueous solutions

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BBC Bitesize: Electrolysis
Electrolysis is used to extract and purify metals.


Energy changes

Exothermic & endothermic reactions, bond energy


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