Nota Terkini

Wednesday, October 21, 2009

[Chemistry SPM] Chemistry Term & Definition

  1. Isomers
    Definition: Compound with the same molecular formula but different structural formulae.

  2. Empirical Formula
    Definition: The formula that gives the simplest whole number ratio of atoms of each element in the compound.

  3. Electrolysis
    Definition: A process that involves passing electricity through compounds in molten or aqueous state to break them down into their constituent elements.

  4. Melting point
    Definition: The temperature at which a solid changes into liquid form under a particular pressure.

  5. Strong alkali
    Definition: A chemical substance that ionises completely in water and produces a high concentration of hydroxide ions.

  6. Unsaturated hydrocarbon
    Definition: An organic compound that contains only carbon and hydrogen, as well as double or triple bonds between carbon atoms.

  7. Redox reaction
    Definition: A reaction that involves electron transfer or a change in oxidation number.

  8. Activation energy
    Definition: The minimum energy colliding reactant particles must have before collisions between them can result in a chemical reaction.

  9. Strong acid
    Definition: A chemical substance that ionises completely in water and produces a high concentration of hydrogen ions.

  10. Rate of reaction
    Definition: The charge in quantity of reactants and reaction products with time.

1 comment:

  1. I have a site too which also has the definition on chemistry. My focus is on SPM and STPM science students. Your website is a very well-organised and informative website. If you need any trials paper from Johor, you may contact me or download from my server. :) Great job Cikgu Naza

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