crude oil and hydrocarbons

Element

A substance that contains only one type of atom

Compound

A substance containing 2 or more types of atom chemically combined in a fixed proportion

What is a mixture

Contains 2 or more substances thag are not chemically combined

Crude oil

A mixture of hydrocarbons made from ancient biomass that was buried in mud

Hydrocarbon

Compound containing only hydrogen and carbon atoms

How many electrons are in carbons outer shell and how many bonds can it make

4 electrons in its outer shell

So can therefore form 4 bonds

How many electrons in hydrogen outer shell and how many bonds can it form

1 electron in outer shell

So can therefore form 1 bond

What type of resource is crude oil

Finite as if we continue using it then crude oil will one day run out

When / How is crude oil formed

Formed over millions of years ago from the remains of tiny sea creatures called plankton which were buried in mud

What type of bonds are found in hydrocarbons

Covalent

2 main types of hydrocarbons

Alkanes

Alkenes

How to seperate the substances in crude oil

Physical methods including distillation

What is a fraction

A mixture of hydrocarbons with similair properties

Properties of short chain hydrocarbons

Low boiling point

Not viscous

Flammable

Volatile

Properties of long chain hydrocarbons

High boiling point

Viscous

Not flammable

Not volatile