![]() Space fill models are similar to ball and stick models in that they are three-dimensional models that represent atoms as colored spheres. Particular atoms are associated with different colors, for example, black is usually used to represent carbon and white to represent hydrogen. Bond-line notation is predominantly used in organic chemistry (chemistry associated with living things).īall and stick models are three-dimensional models where atoms are represented by spheres of different colors and bonds are represented by sticks between the spheres. Lines indicate bonds to other atoms, and non-bonding electrons are represented as small dots next to the chemical symbols.īond-line notation shows selected atoms as their chemical symbols while depicting some carbon atoms as corners between lines and omitting hydrogen atoms that are assumed to be in the structure. Lewis dot structures are two-dimensional representations of molecules that illustrate each atom as its chemical symbol. SF Table 2.2 shows four different models used for showing the molecule for butane (C 4H 10). ![]() Each molecular representation has advantages and disadvantages, but each contributes to scientists’ ability to understand chemistry. ![]() Over time the way in which molecules are modeled has changed. Chemistry can be a difficult subject to understand, partly because the structure and shape of atoms and molecules can be hard to imagine. ![]()
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