11.3 - Representing the formulae

Question 1

Molecular formula

Answer 1

Shows the number and the type of atoms of each element present in a molecule
Doesn’t show how atoms are joined together
C2H6O (Ethanol)

Question 2

Empirical Formula

Answer 2

Simplest whole-number ratio of atoms of each element present in the compound
Glucose (C6H12O6) - CH2O

Question 3

General Formula

Answer 3

Simplest algebraic formula for any member of a homologous series

Question 4

Displayed Formula

Answer 4

Shows the positioning of the atoms in the molecules and the bonds between them

Question 5

Structural Formula

Answer 5

Smallest amount of detail necessary to show arrangement of the atoms in the molecule

Question 6

Skeletal Formula

Answer 6

Simplified Organic Formula

• Remove all the carbon and hydrogen from carbon chain
• Remove all the hydrogen atoms
• A line (SIngle bond)
• Intersection of two lines (carbon atoms)
• End of line is a (-CH3 group)