Unit 3 - Section 1

Question 1

What is the molecular formula?

Answer 1

Gives the actual number of atoms of each element in a molecule

Question 2

What is the structural formula?

Answer 2

Shows the atoms carbon by carbon with the attached hydrogen and functional group

Question 3

What is the displayed formula?

Answer 3

Shows the atom arrangement and the bonds between them

Question 4

What is the empirical formula?

Answer 4

The simplest whole number ratio of atoms of each element in a molecule

Question 5

What is the skeletal formula?

Answer 5

Shows the bonds of the carbon, it doesn’t show the hydrogen, however it does show the halogens attached to the carbons and the double bonds between them

Question 6

What are alkanes and what does there name end in?

Answer 6

Hydrocarbons where every carbon has four bonds with a different atoms and the names end in -and

Question 7

What are cycloalkanes?

Answer 7

Alkanes where all the carbons only have two hydrogen’s attached to them, the carbons also form a ring

Question 8

What are alcohols and what does there name end in?

Answer 8

They are alkanes where one or more hydrogens are replaced with a -OH. The names end in -ol

Question 9

What are aldehydes and what do they end in?

Answer 9

They are straight chains with branching structure and they end in CHO

Question 10

What are ketones?

Answer 10

Oxidised aldyhides so there is a chained double bonded O