Alkanes

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1. Alkanes are hydrocarbons, as they only contain the elements hydrogen and carbon. What is the name of the simplest alkane? Ethane Methane Propane Butane

2. As alkanes are a homologous series, what is the general formula for a linear alkane? Cn Hn Cn H2n+2 Cn H2n Cn H2n - 2

3. Carbon is capable of catenation, which is the ability of an element to form covalent bonds to itself. Carbon can form single, double or triple bonds to other carbon atoms, but which of these is present in alkanes? Single Triple Double Single and Double

4. How many carbon atoms does heptane contain? Answer: (One Word or Number)

5. What is formed when an alkane undergoes complete combustion? Oxygen, hydrogen and carbon dioxide Carbon dioxide and water Oxygen, water and carbon Carbon monoxide and hydrogen

6. In general terms, what is the name given to the product when an alkane reacts with a halogen? Halogenalkane Alkyl halogenide Haloalkane All of these

7. How many carbon atoms must be present in an alkane for the molecule to show structural isomerism? 4 5 3 6

8. What is the general term used to describe an alkane in a ring structure? Ringalkane Alkaneround Alkanecyclo Cycloalkane

9. What is the trend in boiling points for straight chain alkanes? As the molecular mass increases, so does the boiling point As the molecular mass increases, the boiling point remains the same As the molecular mass increases, the boiling point decreases As the molecular mass increases, the boiling point rises and falls depending on whether or not there is an even or odd number or carbon atoms

10. When an alkane exists in a ring structure, it has a higher boiling point than the corresponding straight chain alkane. True False