Draw the structural formula and give the molecular formula - butane
Draw the structural formula and give the molecular formula - 1 – hexene
Draw the structural formula and give the molecular formula - 2 – pentyne
Draw the structural formula and give the molecular formula - ethyne
Draw the structural formula and give the molecular formula - 4- nonene
Why is no number used in the names “ethene” and “propene”? There is only one place you can put the double bond for both molecules.
Why is the name 3 - pentyne incorrect? It would be 2 pentyne as you always have to name using the smallest hydrocarbon chain.
Describe 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.
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
To make fuels better for internal combustion engines straight chain hydrocarbons are broken down into shorter branched chain hydrocarbons process of cracking
a particular combination of atoms that contributes to the physical and chemical characteristics of a substance functional group
What type of functional group does an alcohol contain OH (hydroxyl) group
Give the physical properties of alcohols polar higher melting and boiling points the alkanes of similar chain length longer the carbon chain is the higher the boiling point will be
Write the equation for the complete combustion of methanol. 2CH 3 OH + 3O 2 ===> 2CO 2 + 4H 2 O
What type of functional group does an ether contain? R – O - R
. 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.
Arrange the following compounds in order of increasing boiling point. 1 – pentanol, decane, 1 – decanol, pentane Pentane, 1-pentanol,decane, decanol
Consider the following two compounds: CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 OH and CH 3 CH 2 CH 2 OCH 2 CH 2 CH 3. Which is an ether and which is an alcohol CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 OH – alcohol CH 3 CH 2 CH 2 OCH 2 CH 2 CH 3. - ether
Which will evaporate at the lower temperature CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 OH or CH 3 CH 2 CH 2 OCH 2 CH 2 CH 3. CH 3 CH 2 CH 2 OCH 2 CH 2 CH 3. - ether
Which has the higher solubility in a polar solvent - CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 OH or CH 3 CH 2 CH 2 OCH 2 CH 2 CH 3. CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 OH – alcohol
What type of functional group does a carboxylic acid have? COOH
What type of chemical reaction is common for carboxylic acids Esterfication and neutralization reactions.
What is a plastic? synthetic (man made) polymer
What are large molecules that are formed by linking many small molecules together called: polymer
A molecule that is able to bond in long chains. monomer
What is the difference between an addition polymer and a condensation polymer? Give an example of each addition polymers the monomers will contain one or more multiple bonds that can undergo addition reactions. condensation reaction water is a product