Hydrocarbons - Alkenes Flashcards
0
Q
Why are alkenes more reactive?
A
Double bonds can open up and join onto things, making polymers of long chains
1
Q
How is a double covalent bond formed?
A
To fill the outer shell, two atoms share two pairs of electrons.
2
Q
What are the first 3 alkenes?
A
Ethene, propene, butene
3
Q
What is the formula for alkenes with one double bond?
A
CnH2n
4
Q
What happens when you test for alkenes using bromine water?
A
Bromine water is bright orange and very reactive - if mixed with double bonds they spring open and react, orange colour disappears.
