BRAINCAKEFormulae
Revision notes for Formulae in OCR Chemistry A (H432). Read the start of any lesson here, then sign in free for the whole lesson, the R.E.C.I.P.E. recall steps and the quiz.
- Functional GroupAn atom or group of atoms that gives a compound its distinctive chemical properties.
- Homologous SeriesA set of compounds with the same functional group and similar chemical properties which differ by the addition of a -CH2 group.
- General FormulaThe general formula of a compound is the simplest algebraic ratio of atoms of each elements in the compound.
- Types of FormulaeDisplayed Formula This shows every atom and every bond separately.
- Empirical and Molecular FormulaEmpirical Formula This shows the simplest whole-number ratio of atoms of each element in the compound.