Alkanes

Question 1

what is a molecular formula?

Answer 1

Formula that give the exact/actual number of atoms of each element in one molecule.

Question 2

Empirical formula

Answer 2

Formula that gives the simplest ratio of atoms of each element in a compound.

Question 3

General formula

Answer 3

This shows the number of atoms of each element in a substance which is n carbon atoms. All the molecules in a homologous series have the same general formula.

Question 4

structural formula

Answer 4

This shows how the atoms are joined together in a molecule.

Question 5

Displayed formula

Answer 5

This shows all the bonds and atoms in a molecule.

Question 6

Skeletal formula

Answer 6

This uses lines to represent bonds. Each point represents a C atom. H atoms and bonds to H atoms are usually not shown (unless part of a functional group, e.g. alcohol, aldehydes). Other atoms (e.g. O, N, F, Cl, Br, I, S) are shown.