[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.