This is a list of your berry important definitions for SPM Form 5 Chemistry. Print them for easy reference. Print them for your friends too if you find it useful.
SPM Chemistry Form 5 Definition List:
- Effective collision (Collision theory) – collision that results in a chemical reaction where the particles collide with the correct orientation and are able to achieve the activation energy.
- Homologous series – organic compounds (families) with similar formulae and properties.
- Catalyst – a chemical that alter the rate of reaction.
- Positive catalyst – increases the rate of reaction & lower the activation energy.
- Negative catalyst – decreases the rate of reaction & higher the activation energy
- Organic compounds – carbon-containing compound. Carbon atoms form covalent bonds.
- Inorganic compounds – compounds from non-living things which do not contain the element carbon.
- Saturated hydrocarbons – hydrocarbons containing only single bonds between all carbon atoms.
- Unsaturated hydrocarbons – hydrocarbons containing at least one carbon-carbon double or triple bond.
- Esterification – esters are produced
- Vulcanisation – process which makes the natural rubber harder and increases its elasticity by adding sulphur.
- Redox reaction – chemical reactions involving oxidation and reduction occurring simultaneously.
- Flavouring – improve the taste or smell of food and restore taste loss due to food processing.
- Stabilisers – help to mix two liquids that usually do not mix together so that they form an emulsion.
- Thickeners – substances that thicken food and give the food a firm, smooth and uniform texture.
- Precipitation – the heat change when one mole of a precipitate is formed from their ions in aqueous solution.
- Displacement – the heat change when one mole of a metal is displaced from its salt solution by a more electropositive metal.
- Neutralisation – the heat change when one mole of water is formed from the reaction between an acid and an alkali.
- Combustion – the heat change when one mole of a substance is completely burnt in oxygen under standard conditions.
So there you go!!! 19 of the most common definitions for SPM Form 5 Chemistry.