Revision Quiz Hydrocarbons 1 1. What elements do hydrocarbons contain? 2. How many bonds must carbon have? 3. What is the simplest hydrocarbon? 4. What is another name for methane? 5. What is the molecular formula for methane? carbon + hydrogen 4 methane Natural gas CH4

Revision Quiz Hydrocarbons 2 1. What is the family to which methane and ethane belong? 2. What is the 1st liquid alkane? 3. What is the third alkane called? 4. What is the molecular formula for butane? 5. How many carbons does pentane have? Alkanes or hydrocarbons pentane propane C4H10 5

Revision Quiz Hydrocarbons 3 1. What is the general formula of the alkanes? 2. Which alkane is mainly used to make petrol? 3. Which alkane would be found in the gas fraction? 4. How many carbons does the alkane that has 22 hydrogens have? 5. How many hydrogens does the alkane with 14 carbons have? CnH2n+2 octane Methane, ethane, propane and butane 10 30

Revision Quiz Hydrocarbons 4 1. What is the general formula of the alkenes? 2. Which is the 2nd alkene? 3. What feature(functional group) is common to alkenes? 4. How many carbons does the alkene that has 22 hydrogens have? 5. How many hydrogens does the alkene with 14 carbons have? CnH2n propene Double bond 11 28

Revision Quiz Hydrocarbons 5 1. What is the general formula of the cycloalkanes? 2. Which is the 1st cycloalkane? 3. What feature(functional group) is common to cycloalkanes? 4. How many carbons does the cycloalkane that has 22 hydrogens have? 5. How many hydrogens does the cycloalkane with 14 carbons have? CnH2n cyclopropane Arranged in a circle 11 28

Revision Quiz Hydrocarbons 6 1. What products would all hydrocarbons make when they burn? 2. If there was less oxygen around what might be a product also? 3. Why is this a problem? 4. What kind of reaction do alkenes do with hydrogen? 5. What is meant by unsaturated? Carbon dioxide and water Carbon monoxide It is lethal addition Molecule that has at least one C=C double or C=C triple bond

Revision Quiz Hydrocarbons 7 1. What is made when hydrogen is added to propene? 2. Describe the bromine test 3. What does saturated mean? 4. Give four examples of other molecules that can add on to ethene. 5. What might you do tell octane & octene apart? CnH2n Add bromine solution if molecule is quickly decolourised it not saturated. Contains only single C-C bonds H2 Cl2 Br2 F2 I2 HI HBr HCl HI H2O Add bromine solution if molecule is quickly decolourised it is octene if not it is octane

Revision Quiz Hydrocarbons 8 1. What is an isomer? 2. Which two homologues that we have looked at are isomers? 3. What is cracking? 4. Why is cracking important? 5. Suggest a way of making alkenes? Same molecular formula different structural formula Alkenes and cycloalkanes Cutting big molecule into lots of little molecules So that supply can meet demand Crack an alkane

Revision Quiz Hydrocarbons 9 1. Identify these molecules? methane ethane butane cyclobutane propene

Revision Quiz Hydrocarbons 10 1. Identify these molecules? propane cyclohexane butane propene cyclopropane

Revision Quiz Hydrocarbons 11