Hydrocarbons - Alkanes

Question 0

What are hydrocarbons used for?

Answer 0

Petrol, diesel, lots of plastics

Question 1

What is a hydrocarbon?

Answer 1

A compound of carbon and hydrogen atoms - alkanes

Question 2

How are hydrocarbons held together?

Answer 2

Covalent bonds - share electrons, very strong

Each atom makes enough covalent bonds to fill it’s outer shell, eg hydrogen needs 2, carbon 4 etc

Question 3

The simplest type of hydrocarbon is an?

Answer 3

Alkane - chains of carbon atoms with 2 hydrogen atoms attached to each one and 3 at the ends.

Question 4

Alkanes are saturated compounds, what foes this mean?

Answer 4

Contain single covalent bonds, can’t open up and join other things.

Question 5

How can you test between alkanes and alkenes?

Answer 5

Alkane won’t discolour in bromine water

Question 6

What are the first 4 alkanes?

Answer 6

Methane, ethane, propane, butane

Question 7

What is the formula for all alkanes?

Answer 7

CnH2n+ 2