11.3/4/5 - Formulae, Isomerism, Reaction Mechanisms Flashcards Preview

OCR A Chemistry A Level - Chapter 11 > 11.3/4/5 - Formulae, Isomerism, Reaction Mechanisms > Flashcards

Flashcards in 11.3/4/5 - Formulae, Isomerism, Reaction Mechanisms Deck (8)
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1

Define molecular formula

Formula that shows the number and type of atoms of each element present in a molecule

2

Define empirical formula

Formula showing the simplest whole number ratio of atoms of each element present in a compound

3

Define general formula

Simplest algebraic formula of a member of a homologous series. E.g. alkanes CnH2n+2

4

Difference between displayed and structural formula

Displayed formula shows the relative positioning of all atoms in a molecule and a bond between them

Structural formula - Displayed formula without the bonds, formula showing minimal detail for arrangement of atoms in a molecule

5

Define structural isomerism

Compounds with the same molecular formula but different structural formula.

6

Define homolytic fission

Breaking of a covalent bond with one of the bonded electrons going to each atom forming 2 radicals

7

Define heterolytic fission

Breaking of a covalent bond forming a cation and an anion

8

Define radical

A species with an unpaired reaction