Hydrocarbons, fractional distillation and cracking

How many carbon atoms are in methane?

• 1
• 2
• 3
• 4

How many carbon atoms are in ethane?

• 1
• 2
• 3
• 4

Hydrocarbons are compounds that contain

•   Carbon and Nitrogen
• Carbon and Hydrogen 
•   Carbon, and Oxygen
• Carbon, Oxygen, and  Hydrogen 

Name this alkane

• Methane
• Ethane
• Propane
• Butane

Name this alkane

• Methane
• Ethane
• Propane
• Butane

What is the general formula of the alkenes?

• CnH2n+1

• C_nH_2n+2

• C_nH_2n

• CnH2n+1OH

The boiling point of hydrocarbons . . .

• increases with increasing chain length

• decreases with increasing chain length

• is not affected by chain length

Fractional distillation separates crude oil based on the different __________ of the molecules in the mixture

• melting point

• boiling point

• freezing point

• chemical reactivity

A fraction of crude oil is made up of:

• Hydrocarbons of similar chain lengths

• Numbers

• Large hydrocarbons

• Alkenes only

Crude oil is made up of:

• Ethane

• Butane

• A mixture of different hydrocarbons

• Extremely large hydrocarbons which are broken up once extracted