Hydrocarbon

Which row shows the correct use of a fraction obtained by the fractional distillation of petroleum? 

$$\begin{array}{|c|c|c|} \hline & \text { fraction } & \text { use } \\ \hline \text { A } & \text { bitumen } & \text { making waxes and polishes } \\ \text { B } & \text { fuel oil } & \text { aircraft fuel } \\ \text { C } & \text { kerosene } & \text { fuel for ships } \\ \text { D } & \text { naphtha } & \text { making chemicals } \\ \hline \end{array}$$

Bitumen is a substance obtained from the fractional distillation of petroleum.
Which row describes its boiling point and the size of its molecules?

$$\begin{array}{|c|c|c|} \hline & \text { boiling point } & \text { size of molecules } \\ \hline \text { A } & \text { high } & \text { large } \\ \text { B } & \text { high } & \text { small } \\ \text { C } & \text { low } & \text { large } \\ \text { D } & \text { low } & \text { small } \\ \hline \end{array}$$

Fuel oil, gasoline, kerosene and naphtha are four fractions obtained from the fractional distillation of petroleum.
What is the order of the boiling points of these fractions?

$$\begin{array}{|c|l|} \hline & \text { highest boiling point } \rightarrow \text { lowest boiling point } \\ \hline \text { A } & \text { fuel oil } \rightarrow \text { kerosene } \rightarrow \text { gasoline } \rightarrow \text { naphtha } \\ \text { B } & \text { fuel oil } \rightarrow \text { kerosene } \rightarrow \text { naphtha } \rightarrow \text { gasoline } \\ \text { C } & \text { gasoline } \rightarrow \text { naphtha } \rightarrow \text { kerosene } \rightarrow \text { fuel oil } \\ \text { D } & \text { naphtha } \rightarrow \text { gasoline } \rightarrow \text { kerosene } \rightarrow \text { fuel oil } \\ \hline \end{array}$$

The diagram shows the separation of petroleum into fractions.

What could $X, Y$ and $Z$ represent?

$$\begin{array}{|c|c|c|c|} \hline & \text { X } & Y & Z \\ \hline \text { A } & \text { diesel oil } & \text { lubricating fraction } & \text { paraffin } \\ \text { B } & \text { lubricating fraction } & \text { diesel oil } & \text { paraffin } \\ \text { C } & \text { paraffin } & \text { lubricating fraction } & \text { diesel oil } \\ \text { D } & \text { paraffin } & \text { diesel oil } & \text { lubricating fraction } \\ \hline \end{array}$$

Which structure is incorrect?

Which fuel could be gasoline?

Fuel oil and naphtha are two fractions obtained from petroleum.
What are the major uses of these fractions?

$$\begin{array}{|c|c|c|} \hline & \text { fuel oil } & \text { naphtha } \\ \hline \text { A } & \text { jet fuel } & \text { making chemicals } \\ \text { B } & \text { jet fuel } & \text { making roads } \\ \text { C } & \text { ship fuel } & \text { making chemicals } \\ \text { D } & \text { ship fuel } & \text { making roads } \\ \hline \end{array}$$

Which statement is correct?

 What is not the correct use of the fraction named? 

$$\begin{array}{|c|c|c|} \hline & \text { name of fraction } & \text { use } \\ \hline \text { A } & \text { fuel oil } & \text { making waxes } \\ \text { B } & \text { gas oil } & \text { fuel in diesel engines } \\ \text { C } & \text { kerosene } & \text { jet fuel } \\ \text { D } & \text { naphtha } & \text { making chemicals } \\ \hline \end{array}$$

 The table shows the composition of four different types of petroleum (crude oil). 

$$\begin{array}{|l|c|c|c|c|} \hline {\text { fraction }} & \begin{array}{c} \text { Arabian Heavy } \\ / \% \end{array} & \begin{array}{c} \text { Arabian Light } \\ / \% \end{array} & \begin{array}{c} \text { Iranian Heavy } \\ / \% \end{array} & \begin{array}{c} \text { North Sea } \\ / \% \end{array} \\ \hline \text { gasoline } & 18 & 21 & 21 & 23 \\ \text { kerosene } & 11.5 & 13 & 13 & 15 \\ \text { diesel oil } & 18 & 20 & 20 & 24 \\ \text { fuel oil } & 52.5 & 46 & 46 & 38 \\ \hline \end{array}$$

Which type of petroleum is best for the motor vehicle industry?

Which statement about petroleum is not correct?

The table shows some fractions that are obtained from petroleum by fractional distillation, together with some of their uses.
$$\begin{array}{|c|c|} \hline \text { fraction } & \text { use } \\ \hline \text { refinery gas } & \text { cooking } \\ \text { gasoline } & \text { fuel for cars } \\ 1 & \text { making chemicals } \\ 2 & \text { jet fuel } \\ 3 & \text { fuel for ships } \\ \text { bitumen } & \text { making roads } \\ \hline \end{array}$$
Which row correctly identifies fractions 1,2 and 3 ?

$$\begin{array}{|c|c|c|c|} \hline & 1 & 2 & 3 \\ \hline \text { A } & \text { diesel oil } & \text { fuel oil } & \text { lubricating fraction } \\ \text { B } & \text { fuel oil } & \text { diesel oil } & \text { kerosene } \\ \text { C } & \text { kerosene } & \text { naphtha } & \text { diesel oil } \\ \text { D } & \text { naphtha } & \text { kerosene } & \text { fuel oil } \\ \hline \end{array}$$

Which list shows the fractions obtained from distilling petroleum, in order of increasing boiling point?

Which structure shows a carboxylic acid?

Which compound does not belong to the same homologous series as the other three compounds?

Which group of compounds is part of a homologous series?

Which structures show compounds that are members of the same homologous series?

The list gives the names of four organic compounds.

ethane
ethanoic acid
ethanol
ethene

Which bond do all four compounds contain?

Which statements about homologous series are correct?
1 All members have similar chemical properties.
2 All members have the same molecular mass.
3 Ethane and ethene are members of the same homologous series.
4 Ethane and propane are members of the same homologous series.

The diagram shows the structure of a compound.
To which classes of compound does this molecule belong?

$$\begin{array}{|c|c|c|c|} \hline & \text { alkane } & \text { alkene } & \text { alcohol } \\ \hline \text { A } & \text { no } & \text { no } & \text { no } \\ \text { B } & \text { no } & \text { yes } & \text { yes } \\ \text { C } & \text { yes } & \text { no } & \text { yes } \\ \text { D } & \text { yes } & \text { yes } & \text { yes } \\ \hline \end{array}$$

The structures of three compounds are shown.
Why do these substances all belong to the same homologous series?

The table shows bonds that are present and bonds that are not present in compound X.

$$\begin{array}{|c|c|} \hline \text { bond } & \\ \hline \mathrm{C}-\mathrm{C} & \checkmark \\ \mathrm{C}=\mathrm{C} & ✘ \\ \mathrm{C}-\mathrm{H} & \checkmark \\ \mathrm{C}-\mathrm{O} & \checkmark \\ \mathrm{C}=\mathrm{O} & \checkmark \\ \mathrm{O}-\mathrm{H} & \checkmark \\ \hline \end{array}$$

What type of compound is X?

$X, Y$ and $Z$ are three hydrocarbons.
$$\mathrm{X}\quad\mathrm{CH}_2=\mathrm{CH}_2 \quad\quad\quad         \mathrm{Y} \quad\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}_2 \quad\quad\quad             \mathrm{Z} \quad \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}=\mathrm{CH}_2$$
What do compounds $X, Y$ and $Z$ have in common?
1 They are all alkenes.
2 They are all part of the same homologous series.
3 They all have the same boiling point.

Ethene, propene and butene are all members of the same homologous series.
Which statement explains why ethene, propene and butene have similar chemical properties?

Which structure is correctly named?

The diagram shows the structures of three compounds.

Why do these three compounds belong to the same homologous series?

The diagram shows the structures of three compounds.
Why do these three compounds belong to the same homologous series?

PVA is a polymer. The monomer has the structure shown.

To which homologous series does this compound belong?

$$\begin{array}{|c|c|c|} \hline & \text { alcohols } & \text { alkenes } \\ \hline \text { A } & \checkmark & \checkmark \\ \text { B } & \checkmark & x \\ \text { C } & x & \checkmark \\ \text { D } & x & x \\ \hline \end{array}$$

Which pair of compounds are members of the same homologous series?

Alkenes have the general formula $\mathrm{C}_n \mathrm{H}_{2 n}$. Which of the following is an alkene?

Which two compounds are molecules which both contain a double bond?

The structures of four compounds are shown. 

Which are members of the same homologous series?

Which statement about a homologous series is correct?

Methane, ethane and propane belong to a family of hydrocarbons called alkanes.
What is the general formula of an alkane?

Which group of compounds is part of a homologous series?

Butane and methylpropane are isomers with molecular formula $\mathrm{C}_4 \mathrm{H}_{10}$.
Which statements are correct?

1 They have similar chemical properties.
2 They have the same general formula.
3 They have the same structural formula.

The main constituent of natural gas is hydrocarbon $X$.
To which homologous series does $X$ belong and how many atoms are in one molecule of $X$ ?

$$\begin{array}{|c|c|c|} \hline & \text { homologous series } & \begin{array}{c} \text { number of atoms } \\ \text { in one molecule } \end{array} \\ \hline \text { A } & \text { alkane } & 1 \\ \text { B } & \text { alkane } & 5 \\ \text { C } & \text { alkene } & 1 \\ \text { D } & \text { alkene } & 5 \\ \hline \end{array}$$

Which equation represents incomplete combustion of ethane?

Which type of reaction takes place when methane reacts with chlorine in the presence of ultraviolet light?

 Which products are obtained by the cracking of an alkane? 

$$\begin{array}{|c|c|c|c|} \hline & \text { alkene } & \text { hydrogen } & \text { water } \\ \hline \text { A } & \checkmark & \checkmark & \checkmark \\ \text { B } & \checkmark & \checkmark & x \\ \text { C } & \checkmark & x & \checkmark \\ \text { D } & x & \checkmark & \checkmark \\ \hline \end{array}$$

Butane reacts as shown.

What is this type of reaction?

Which equation represents the incomplete combustion of propane, $\mathrm{C}_3 \mathrm{H}_8$ ?

Alkenes are manufactured by cracking hydrocarbons obtained from petroleum.

Which row describes the process of cracking?

$$\begin{array}{|c|c|c|c|c|} \hline & \begin{array}{c} \text { size of } X \\ \text { molecules } \end{array} & \begin{array}{c} \text { size of } Y \\ \text { molecules } \end{array} & \begin{array}{c} \text { catalyst } \\ \text { required } \end{array} & \begin{array}{c} \text { temperature } \\ \text { required } \end{array} \\ \hline \text { A } & \text { large } & \text { small } & \text { no } & \text { low } \\ \text { B } & \text { large } & \text { small } & \text { yes } & \text { high } \\ \text { C } & \text { small } & \text { large } & \text { no } & \text { low } \\ \text { D } & \text { small } & \text { large } & \text { yes } & \text { high } \\ \hline \end{array}$$

Alkanes undergo substitution reactions with chlorine in the presence of ultraviolet light.
Which equation shows a reaction of this type?

During the process of cracking hydrocarbons, an ………. 1 ……….. is converted into an ……….. 2 ………..  .
The presence of an ……….. 3 ……….  can be shown by a visible reaction with ……….. 4 ……….  .

Which words complete gaps $1,2,3$ and $4$?

$$\begin{array}{|c|c|c|c|c|} \hline & 1 & 2 & 3 & 4 \\ \hline \text { A } & \text { alkane } & \text { alkene } & \text { alkene } & \text { bromine } \\ \text { B } & \text { alkane } & \text { alkene } & \text { alkene } & \text { steam } \\ \text { C } & \text { alkene } & \text { alkane } & \text { alkane } & \text { bromine } \\ \text { D } & \text { alkene } & \text { alkane } & \text { alkane } & \text { steam } \\ \hline \end{array}$$

The equation shows an industrial process.

What is the name of compound X?

A hydrocarbon A is cracked to make B and hydrogen.
Compound C is formed by the addition polymerisation of B.
To which homologous series do A, B and C belong?

$$\begin{array}{|c|c|c|} \hline & \text { alkene } & \text { alkane } \\ \hline \text { A } & \text { A } & \text { B and C } \\ \text { B } & \text { B } & \text { A and C } \\ \text { C } & \text { C } & \text { A and B } \\ \text { D } & – & \text { A and C } \\ \hline \end{array}$$

Which product is obtained when bromine reacts with propene, $\mathrm{CH}_3 \mathrm{CH}=\mathrm{CH}_2$ ?

X, Y and Z are three hydrocarbons.

What do compounds X, Y and Z have in common?

1 They are all alkenes.
2 They are all part of the same homologous series.
3 They all have the same boiling point.

The diagram shows a flow diagram.

Which type of organic compounds are X and Y ?

$$\begin{array}{|l|c|l|} \hline & \text { substance } X & \text { substance } Y \\ \hline \text { A } & \text { alcohol } & \text { alkane } \\ \text { B } & \text { alkane } & \text { alkene } \\ \text { C } & \text { alkene } & \text { alkane } \\ \text { D } & \text { alkane } & \text { alcohol } \\ \hline \end{array}$$

Increasing the number of atoms in one molecule of a hydrocarbon increases the amount of energy released when it burns. What is the correct order?

A compound has the formula $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}=\mathrm{CH}_2$.
Which row in the table shows the type of compound and the colour change when aqueous bromine is added?

$$\begin{array}{|c|c|c|} \hline & \text { type of compound } & \text { colour change } \\ \hline \text { A } & \text { saturated } & \text { brown to colourless } \\ \text { B } & \text { saturated } & \text { colourless to brown } \\ \text { C } & \text { unsaturated } & \text { brown to colourless } \\ \text { D } & \text { unsaturated } & \text { colourless to brown } \\ \hline \end{array}$$

 Which row describes an advantage and a disadvantage of making ethanol by fermentation? 

$$\begin{array}{|c|c|c|} \hline & \text { advantage } & \text { disadvantage } \\ \hline \text { A } & \text { uses a renewable resource } & \text { occurs at a slow rate } \\ \text { B } & \text { needs a high temperature } & \text { produces impure ethanol as a product } \\ \text { C } & \text { produces pure ethanol as a product } & \text { needs a high temperature } \\ \text { D } & \text { occurs at a slow rate } & \text { uses a non-renewable resource } \\ \hline \end{array}$$

Ethanol can be formed by:

1 fermentation
2 reaction between steam and ethene.

Which of these processes use a catalyst?

$$\begin{array}{|c|c|c|} \hline & 1 & 2 \\ \hline \text { A } & \checkmark & \checkmark \\ \text { B } & \checkmark & x \\ \text { C } & x & \checkmark \\ \text { D } & x & x \\ \hline \end{array}$$

The table shows the boiling points of four members of the homologous series of alcohols.

What is the value of X ?

The diagram shows a reaction sequence.

Which row names the processes X, Y and Z ?

$$\begin{array}{|c|c|c|c|} \hline & \mathrm{X} & \mathrm{Y} & \mathrm{Z} \\ \hline \text { A } & \text { cracking } & \text { fermentation } & \text { respiration } \\ \text { B } & \text { cracking } & \text { hydration } & \text { combustion } \\ \text { C } & \text { distillation } & \text { fermentation } & \text { respiration } \\ \text { D } & \text { distillation } & \text { hydration } & \text { combustion } \\ \hline \end{array}$$

Ethanol is manufactured from petroleum by reacting ethene with steam.
Which statements about this process are correct?

1 Ethene is obtained from the cracking of alkanes.
2 The process is carried out in the presence of yeast.
3 The reaction is an addition reaction.
4 The rate of reaction is increased by a catalyst.

The diagram shows a reaction sequence.

Which row names the processes X, Y and Z ?

$$\begin{array}{|c|c|c|c|} \hline & \mathrm{X} & \mathrm{Y} & Z \\ \hline \text { A } & \text { cracking } & \text { fermentation } & \text { respiration } \\ \text { B } & \text { cracking } & \text { hydration } & \text { combustion } \\ \text { C } & \text { distillation } & \text { fermentation } & \text { respiration } \\ \text { D } & \text { distillation } & \text { hydration } & \text { combustion } \\ \hline \end{array}$$

Sugar can be fermented to produce ethanol.
Some of the stages in the process to produce and purify ethanol are listed.

1 Leave in a warm place.
2 Add yeast.
3 Fractionally distil the solution.
4 Dissolve the sugar in water.
5 Filter to remove the yeast.
6 Crush some sugar cane.

What is the correct order of these stages?

Ethanol is made by fermentation of sugars and by the catalytic addition of steam to ethene.
What are two advantages of making ethanol by the catalytic addition of steam to ethene rather than by fermentation of sugars?

Propanol is oxidised by acidified potassium manganate(VII) in a similar way to ethanol.
Which compound is produced by the oxidation of propanol with acidified potassium manganate(VII)?

What is not essential for the formation of ethanol by fermentation?

Substance $Z$ has the following characteristics.

1 It burns in an excess of oxygen to form carbon dioxide and water.
2 It is oxidised by air to form a liquid smelling of vinegar.
3 It reacts with carboxylic acids to form esters.

What is substance $Z$ ?

The structure of compound R is shown.

What is R?

Which statement about ethanoic acid is correct?

Molecule $X$ is both an alkene and a carboxylic acid.
Which row describes $X ?$

$$\begin{array}{|c|c|c|} \hline & \text { saturated } & -\mathrm{COOH} \text { present } \\ \hline \text { A } & \text { no } & \text { no } \\ \text { B } & \text { no } & \text { yes } \\ \text { C } & \text { yes } & \text { no } \\ \text { D } & \text { yes } & \text { yes } \\ \hline \end{array}$$

Which statement describes the compound shown below?

Which statement about aqueous ethanoic acid is correct?

The structure of an ester is shown.

Which combination of carboxylic acid and alcohol produces this ester?

$$\begin{array}{|c|c|c|} \hline & \text { carboxylic acid } & \text { alcohol } \\ \hline \text { A } & \text { butanoic acid } & \text { ethanol } \\ \text { B } & \text { butanoic acid } & \text { propanol } \\ \text { C } & \text { ethanoic acid } & \text { butanol } \\ \text { D } & \text { propanoic acid } & \text { butanol } \\ \hline \end{array}$$

The structure of an ester is shown.

Which alcohol and carboxylic acid produce this ester?

$$\begin{array}{|c|c|c|} \hline & \text { alcohol } & \text { carboxylic acid } \\ \hline \text { A } & \text { ethanol } & \text { ethanoic acid } \\ \text { B } & \text { ethanol } & \text { propanoic acid } \\ \text { C } & \text { propanol } & \text { ethanoic acid } \\ \text { D } & \text { propanol } & \text { propanoic acid } \\ \hline \end{array}$$

The structure of ester W is shown.

Which row gives the names of ester W and the carboxylic acid and alcohol from which it is made?

$$\begin{array}{|c|c|c|c|} \hline & \text { name of ester W } & \text { carboxylic acid } & \text { alcohol } \\ \hline \text { A } & \text { ethyl methanoate } & \text { ethanoic acid } & \text { methanol } \\ \text { B } & \text { ethyl methanoate } & \text { methanoic acid } & \text { ethanol } \\ \text { C } & \text { methyl ethanoate } & \text { ethanoic acid } & \text { methanol } \\ \text { D } & \text { methyl ethanoate } & \text { methanoic acid } & \text { ethanol } \\ \hline \end{array}$$

Which structure shows a carboxylic acid?

The structure of an alkene and the structure of an ester are shown.

What are the names of P and Q?

$$\begin{array}{|c|c|c|} \hline & \mathrm{P} & \mathrm{Q} \\ \hline \text { A } & \text { but-1-ene } & \text { ethyl propanoate } \\ \text { B } & \text { but-1-ene } & \text { propyl ethanoate } \\ \text { C } & \text { but-2-ene } & \text { ethyl propanoate } \\ \text { D } & \text { but-2-ene } & \text { propyl ethanoate } \\ \hline \end{array}$$

Which esters have the molecular formula $\mathrm{C}_5 \mathrm{H}_{10} \mathrm{O}_2$ ?

1 ethyl propanoate
2 propyl ethanoate
3 butyl methanoate
4 methyl butanoate

Which row describes the formation of a polymer?

$$\begin{array}{|c|c|c|} \hline & \text { monomer } & \text { polymer } \\ \hline \text { A } & \text { ethane } & \text { poly(ethane) } \\ \text { B } & \text { ethane } & \text { poly(ethene) } \\ \text { C } & \text { ethene } & \text { poly(ethane) } \\ \text { D } & \text { ethene } & \text { poly(ethene) } \\ \hline \end{array}$$

The diagram shows part of the molecule of a polymer.

Which diagram shows the monomer from which this polymer could be manufactured?

Which equation represents the formation of poly(propene) from propene?

The equation shows the formation of a polymer called Kevlar.

Which row describes Kevlar?

$$\begin{array}{|c|c|c|} \hline & \text { how the polymer is formed } & \text { type of polymer } \\ \hline \text { A } & \text { addition polymerisation } & \text { polyamide } \\ \text { B } & \text { addition polymerisation } & \text { polyester } \\ \text { C } & \text { condensation polymerisation } & \text { polyamide } \\ \text { D } & \text { condensation polymerisation } & \text { polyester } \\ \hline \end{array}$$

A section of a polymer is shown.

How many different types of monomer units formed this section of polymer?

The diagram shows the structure of a monomer and of the polymer made from it.

What are the monomer and polymer?

$$\begin{array}{|c|c|c|} \hline & \text { monomer } & \text { polymer } \\ \hline \text { A } & \text { ethane } & \text { poly(ethane) } \\ \text { B } & \text { ethane } & \text { poly(ethene) } \\ \text { C } & \text { ethene } & \text { poly(ethane) } \\ \text { D } & \text { ethene } & \text { poly(ethene) } \\ \hline \end{array}$$

A polymer linkage contains carbon, hydrogen, nitrogen and oxygen atoms.
Which row about the polymer is correct?

$$\begin{array}{|c|c|c|} \hline & \begin{array}{c} \text { type of } \\ \text { polymer } \end{array} & \text { formed by } \\ \hline \text { A } & \text { polyamide } & \text { addition polymerisation } \\ \text { B } & \text { polyamide } & \text { condensation polymerisation } \\ \text { C } & \text { polyester } & \text { addition polymerisation } \\ \text { D } & \text { polyester } & \text { condensation polymerisation } \\ \hline \end{array}$$

The structure of a polymer is shown.

Which monomer is used to make this polymer?