Download Alkenes - Calderglen High School

Calderglen High Chemistry
Nature’s Chemistry
Alkenes Homework
1.
2.
The grid shows the names of some hydrocarbons.
propane
hexane
pentene
pentane
ethene
butane
(a)
Name the two hydrocarbons which are alkenes.
(b)
Name the two hydrocarbons with five carbon atoms in each molecule.
(c)
Name the hydrocarbon which is the first member of a homologous series.
Name and draw the full structural formula for the alkene with molecular formula
(a)
C2H4
(b) C3H6
(c)
C4H8
3.
State the general formula for the alkenes.
4.
The alkenes are described as being unsaturated.
(d)
C5H10
What does unsaturated mean?
5.
Describe the chemical test, including the result for an unsaturated alkene.
6.
The alkenes are known as a homologous series.
What is meant by a homologous series?
7.
Alkenes decolourise bromine solution.
What does this tell you about the structure of alkenes?
8.
Name the type of chemical reaction taking place when an alkene reacts with hydrogen.
9.
Name the type of chemical reaction represented by the equation:
Calderglen High Chemistry
Nature’s Chemistry
Alkenes Homework
10. In industry, alcohols can be produced from alkenes as shown in the example below.
(i) Name the type of chemical reaction taking place.
11. Bromine reacts with the monomer to produce a saturated compound.
Draw the structural formula for this compound.
12. Ethylthioethane can also be formed by the reaction of ethylthiol with ethene.
Calderglen High Chemistry
Nature’s Chemistry
Alkenes Homework
13. The key below shows the name and general formula of some families of hydrocarbons.
(a) Butyne is an alkyne with 4 carbon atoms.
Using the key, write the molecular formula for butyne.
(b) Hydrocarbon X is a ring compound with molecular formulaC6H6.
Using the key, name the family to which it belongs.