Chemistry C9 Flashcards
1
Q
How much of the air is oxygen?
A
21%
2
Q
What is incomplete combustion?
A
Occurs when the supply of oxygen is poor
3
Q
What are Alkanes?
A
A homologous series of hydrocarbons
4
Q
What happens to bromine water when it is shaken with an alkene?
A
It becomes colourless
5
Q
What happens to bromine water when alkane is shaken with it?
A
It stays the same colour
6
Q
What is needed in order for chlorine to react with ethane in a substitution reaction?
A
Ultraviolet light to break the bond between two chlorine atoms
7
Q
How do you know if a substance is an alkene?
A
It ends in ene
8
Q
How do you know if a substance is an alkane?
A
Ends in ane
9
Q
Why are Alkenes more reactive than Alkanes?
A
The double bond can break open easily
