homologous series - functional group which contains part of a molecule that's always the same, e.g. alkanes.
Alkanes are saturated because each covalent bond in the molecule is a single bond.
Number of carbons
1 - meth-
2 - eth-
3 - prop-
4 - but-
5 - pent-
formula=CnH2n+2 e.g Methane=CH4
- Involves the reaction of a base (including alkalis) with an acid.
- Produces salt and water.
- An exothermic reaction.
Hydrogen + hydroxide=water
BASE includes all metal oxides and metal hydroxides. Insoluble bases are less reactive than soluble bases (alkalis) and a majority only react if acid is heated beforehand. Insoluble bases and acids react at room temperature.