5.9 I can describe the trend in boiling points and viscosity of the main fractions

a.       What is the trend in boiling point of the fractions?

The fractions at the higher end of the column have a lower temperature then the bottom end.

b.      Define viscosity (source your definition)

Viscosity is a fluids “thickness” or the fluency of the water.

c.       What is the trend in viscosity of the fractions?

The higher in the fractional column the liquid has a lower viscosity.

d.      What is the trend in colour of the fractions?

The fractions get lighter as they go up the column.

e.      Why is crude oil separated into fractions?
This is so that we would be able to use the hydrocarbons in the crude oil mixture.

f.        What process is used to separate crude oil into fractions?

Fractional distillation is used to separate the different hydrocarbons.

g.       What physical property allows this process to work?

            The different boiling points.