29What type of reaction will unsaturated hydrocarbons undergo that saturated hydrocarbons will not? Addition reactions
30Write a complete balanced equation for the following addition reaction . Write a complete balanced equation for the following addition reaction Cl2
31.What type of chemical reaction do all hydrocarbons undergo combustion
32Write the balanced chemical equation for the complete combustion of ethane
33Write a complete balanced equation for the following addition reaction + 2 Br2
34The longer the carbon chain the higher the melting and boiling points. How does the length of the carbon chain effect the melting points and boiling points of hydrocarbons?The longer the carbon chain the higher the melting and boiling points.
35Which of the following would you expect to have the highest boiling point? (1) CH3CH2CH2CH2CH3 (2) CH4 (3) CH3CH3(1) CH3CH2CH2CH2CH3
36Are hydrocarbons soluble in water? Why or why not? They are not soluble in water as they are non-polar.
37What are isomers?Isomers have the same molecular formula but different molecular structure. The double or triple bond will be in a different location
38Which of the following pairs represents pairs of isomers?
39Classify each of the following as an alkane, an alkene or an alkyne - propane
40Classify each of the following as an alkane, an alkene or an alkyne -
41Classify each of the following as an alkane, an alkene or an alkyne - ethyne
42Classify each of the following as an alkane, an alkene or an alkyne -
46Draw the structural formula and give the molecular formula - butane
47Draw the structural formula and give the molecular formula - 1 – hexene
48Draw the structural formula and give the molecular formula - 2 – pentyne
49Draw the structural formula and give the molecular formula - ethyne
50Draw the structural formula and give the molecular formula - 4- nonene
51Why is no number used in the names “ethene” and “propene”? There is only one place you can put the double bond for both molecules.
52Why is the name 3 - pentyne incorrect? It would be 2 pentyne as you always have to name using the smallest hydrocarbon chain.
53Describe and explain the relationship between the sizes of hydrocarbon molecules and their boiling points.The longer the hydrocarbon molecule the higher the melting and boiling point.
54fractional distillation is a method used to separate the components of petroleum It involves the process of distillation, making use of the differences in boiling points of the different hydrocarbons.fractional distillation
55To make fuels better for internal combustion engines straight chain hydrocarbons are broken down into shorter branched chain hydrocarbonsprocess of cracking
56a particular combination of atoms that contributes to the physical and chemical characteristics of a substancefunctional group
57What type of functional group does an alcohol contain OH (hydroxyl) group
58Give the physical properties of alcohols polarhigher melting and boiling points the alkanes of similar chain lengthlonger the carbon chain is the higher the boiling point will be
59Write the equation for the complete combustion of methanol. 2CH3OH + 3O2 ===> 2CO2 + 4H2O
66What type of functional group does an ether contain? R – O - R
67. Explain why methanol has a higher melting point than methane. It contains an hydroxyl so is polar and forms hydrogen bonds and will therefore take more energy to split the bonds thus causing an higher melting point.
68Arrange the following compounds in order of increasing boiling point Arrange the following compounds in order of increasing boiling point. 1 – pentanol, decane, 1 – decanol, pentanePentane, 1-pentanol,decane, decanol
69Consider the following two compounds: CH3CH2CH2CH2CH2CH2OH and CH3CH2CH2OCH2CH2CH3. Which is an ether and which is an alcoholCH3CH2CH2CH2CH2CH2OH – alcoholCH3CH2CH2OCH2CH2CH3. - ether
70Which will evaporate at the lower temperature CH3CH2CH2CH2CH2CH2OH or CH3CH2CH2OCH2CH2CH3. CH3CH2CH2OCH2CH2CH3. - ether
71CH3CH2CH2CH2CH2CH2OH – alcohol Which has the higher solubility in a polar solvent - CH3CH2CH2CH2CH2CH2OH or CH3CH2CH2OCH2CH2CH3.CH3CH2CH2CH2CH2CH2OH – alcohol
72What type of functional group does a carboxylic acid have? COOH
73What type of chemical reaction is common for carboxylic acids Esterfication and neutralization reactions.
83synthetic (man made) polymer What is a plastic?synthetic (man made) polymer
84What are large molecules that are formed by linking many small molecules together called: polymer
85A molecule that is able to bond in long chains. monomer
86What is the difference between an addition polymer and a condensation polymer? Give an example of eachaddition polymers the monomers will contain one or more multiple bonds that can undergo addition reactions.condensation reaction water is a product