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GCSE Chemistry · key term
A flat representation with height and width but no actual depth.
Used by Edexcel and OCR
Specification 1.41 · Paper 1, Paper 2
Revise: Limitations of ModelsA displayed formula is a two-dimensional representation: element symbols show the atoms and lines show the covalent bonds connecting them. It is quick to draw and clearly communicates which atoms are joined to which.
A two-dimensional drawing or image used to communicate features of an object or structure that may actually extend in three dimensions.
Specification C2.2g, CM2.3i · Paper 1 (Foundation), Paper 3 (Higher)
A flat representation with length and width but no physical depth, such as a diagram on paper.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A flat representation of a structure, such as a view of one layer of an ionic lattice.
A flat drawing that uses lines, perspective or other conventions to communicate a molecular structure.
A flat representation that shows information in two dimensions, such as a displayed formula drawn on paper.
A diagram showing a three-dimensional arrangement on a flat surface, using the positions of atoms and bonds to suggest depth.
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