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WorksheetsAlkanes and Alkenes
Total questions: 38
Worksheet time: 21mins
Which of the following shows the structure of ethene?
Which of the following is unsaturated hydrocarbon ?
propane
propene
propanol
propanoic acid
Alkanes molecules are held together by
metallic bonds
Van der Waals forces of attraction
covalent bonds
ionic bonds
Methane reacts with chlorine in substitution reaction. Which of these is an essential condition?
An acid catalyst
A low temperature
UV light
A low pressure
Alkanes react with excess oxygen to form
carbon dioxide and water
salt and water
carbon monoxide and soot
metal hydroxide and hydrogen
Possible products of INCOMPLETE combustion
Carbon (C)
Carbon Monoxide (CO)
Carbon Dioxide (CO2)
Water (H2O)
If an alkene has 20 carbon atoms, how many hydrogen atoms will it have?
20
22
40
42
C3H8
1-propene
2-propyne
A homologous series is a family of organic compounds with
similar chemical properties and same general formula
similar chemical properties and different general formula
different chemical properties and same general formula
similar physical properties and same general formula
Each member of a homologous series differs from the next by a
–CH2 group
–CH group
–CO2 group
–CH4 group
Which are the following are all alkanes?
methane, ethane, propane
methane, ethene, propene
methene, ethene, propene
ethene, propene, butene
Both alkanes and alkenes are
hydrocarbons
alcohols
saturated
unsaturated
An alkane is
polyunsaturated
polysaturated
saturated
unsaturated
Which of the following reactions apply to alkenes only
cracking
substitution
addition
combustion
Alkanes undergo substitution by chlorine only in the presence of
UV light
oxygen
water
aqueous bromine
Which of the following shows the structure of propene?
Hydrocarbons that contain a double bond are classified as ___
alkanes
alkenes
alkynes
alkines
A double bond, such as those in alkenes, consists of ___
a sigma bond
a pi bond
a sigma bond and a pi bond
a sigma bond and two pi bonds
Vegetable oils are generally polyunsaturated fats, meaning that they have lots of ___
vitamins
double bonds
minerals
stability
3,4-dimetyhlhexane has the following structure
2,2-dimethyl propane has the same number of carbons as
propane
butane
pentane
hexane
Alkanes and alkenes molecules are held together by
weak covalent bond
weak London forces of attraction
strong covalent bonds
both covalent and London forces
What are the products formed during the incomplete combustion of alkanes or alkenes ?
carbon and oxygen
carbon dioxide and water
carbon, carbon monoxide and water
carbon, carbon dioxide and water
Organic chemistry involves compounds containing (a)
As the number of carbons in an alkane the boiling point (a)
Name this hydrocarbon
(a)
Complete the formula for this alkene C (a) H18
