Galvanising: Coating iron in zinc as a form of sacrificial protection.
Oxidation: Gain of oxygen ions.
Reactivity series: The order in which metals will react with a non-metal, more reactive metals displacing less reactive metals.
Reduction: Loss of oxygen ions.
Rust: Compound formed when iron reacts with water and oxygen.
Sacrificial protection: Coating a less reactive metal in a more reactive metal, so the more reactive metal reacts with the surroundings and the less reactive metal is protected.
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Section 3 a) Specification
3.1 explain the terms homologous series, hydrocarbon, saturated, unsaturated, general formula and isomerism. A homologous series is a grou...
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The group 7 elements, also known as halogens, are F, fluorine, Cl, chlorine, Br, bromine, I, iodine, and At, astatine. They all have antimic... -
Metals can be placed in an order of most to least reactive, called the reactivity series. This can be remembered using an acronym: Plea... -
Particles of a substance can be present in different physical states, the states of matter. They are solid, liquid and gas, and increasing ...
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