Unit 2-(a) Fuels-B. Fractional Distillation Flashcards
0
Q
What is fractional distillation and what is it used for?
A
used to separate crude oil into fractions according to the boiling points of the components
1
Q
What is crude oil?
A
A mixture of chemical compounds mainly hydrocarbons
2
Q
What is a fraction?
A
A group of hydrocarbons with boiling points within a give range
3
Q
Which four things change with the size of the molecules in the fractions? (if small?)
A
- ease of evaporation (v. easy)
- viscosity (not at all)
- flammability (high)
- boiling point (low)
