Topic 9- Part 2 (Hydrocarbons) Flashcards
1
Q
What are alkanes
A
saturated hydrocarbons
only single bonds, maximum hydrogens
2
Q
What does the no. in but1ene or but2ene mean?
A
-Which carbon has the double bond
3
Q
What are alkenes
A
-unsaturated hydrocarbons
-double bond
could have more hydrogen
4
Q
How do alkenes react with bromine?
A
-Addition reaction
-Br2 takes place of double bond
-Dibromoalkane
-Orange —> Colourless
Br-Br
H H
H-C-C-H
Br-Br
5
Q
How to test for alkene?
A
-Add bromine water
-If red/orange–>colourless
-alkene is present
6
Q
What happens in complete combustion of hydrocarbons?
A
-Hydrogens oxidised
-Form CO2 and H2O
