Edexcel GCSE Chemistry · 1CH0
Specification 9.14C, 9.26C · Paper 2
- Revise: Addition Reactions
- Revise: Alcohols
A shortened representation that shows the order in which atoms or groups are connected, such as .
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GCSE Chemistry · key term
A formula that shows how the atoms in a molecule are connected.
Used by Edexcel and OCR
Specification 9.14C, 9.26C · Paper 2
A shortened representation that shows the order in which atoms or groups are connected, such as .
Specification CM6.2i, C6.2b · Paper 2 (Foundation), Paper 4 (Higher)
A formula that shows how atoms are connected, often using lines to represent covalent bonds.
Revise: Structural RepresentationsA structural formula makes the connections clear: a line represents a covalent bond between the atoms at its ends. A ball-and-stick model makes it easier to see how those bonds extend through space. Neither representation tells you everything.
The arrangement of atoms and bonds in a molecule. It can be written in condensed form or drawn as a fully displayed formula.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A formula that shows how atoms are joined within a molecule; it may be condensed rather than showing every bond.
A formula showing how the atoms in a molecule are connected. A fully displayed formula shows every atom and every covalent bond.
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