alkanes Flashcards
(7 cards)
1
Q
what are alkanes
A
group of saturated polymers
2
Q
what does it mean that they’re saturated
A
only have single carbon bonds
3
Q
general formula
A
Cn H2n+2
4
Q
name of the first 5
A
methane
ethane
propane
butane
pentane
5
Q
describe the reactions of alkanes with halogens in the presence of ultraviolet
radiation
A
in a substitution reaction, one atom is swapped with another . Alkanes undergo a substitution reaction with halogens in the presence of ultraviolet radiation
6
Q
example of substitution with halogens of methane and bromine
A
methane + bromine —> bromomethane + hydrogen peroxide
7
Q
conditions needed for reactions with ultraviolet radiation (2)
A
UV light is essential
The reaction won’t happen in the dark
