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GCSE Chemistry (AQA) Quiz on AQA (9-1) Topic 7, created by https:// revisechemistry.uk on 03/03/2018.

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AQA (9-1) Topic 7

Question 1 of 12

1

Identify the missing reactants/products for complete and incomplete combustion:

combustion:
fuel + oxygen → carbon dioxide +

combustion:
fuel + → and water

Drag and drop to complete the text.

    water
    hydrogen
    oxygen
    carbon
    air
    Complete
    Incomplete
    carbon monoxide
    carbon dioxide

Explanation

Question 2 of 12

1

Which of the following is not a hydrocarbon?

Select one of the following:

  • Ethane

  • Propene

  • Methanol

  • Butane

Explanation

Question 3 of 12

1

Select from the dropdown lists to complete the text.

( Fractional distillation, Distillation, Crystallisation ) is the process of separating crude oil into its different compounds. Crude oil is a ( mixture, compound, selection ) of ( compounds, mixtures ), and is pretty useless by itself.

1. Crude oil is ( heated, cooled ) as it enters the fractionating column.
2. The crude oil is evaporated/vaporised, and begins to ( rise, sink ).
3. The top of the column is ( cooler, hotter ) than the bottom.
4. As the gases rise they begin to condense as they reach their ( boiling, melting ) point.
5. The different molecules will condense into ( fractions, halves, quarters ) of molecules with similar boiling points.
6. The ( longer, shorter ) the hydrocarbon chain, the higher the boiling point - so will collect near the bottom of the column. 

Explanation

Question 4 of 12

1

Four unknown alkanes had their viscosities compared, and they are listed below. Pick the chemical that would be described as the "thickest" liquid, or the one that flows most slowly. (The higher the number, the greater the viscosity)

Select one of the following:

  • 1

  • 1.2

  • 1.4

  • 1.6

Explanation

Question 5 of 12

1

A hydrocarbon is a molecule that contains only hydrogen and carbon atoms. Alkanes and alkenes are two homologous series of hydrocarbons. Select below which compounds are ALKANES.

Select one or more of the following:

  • A compound with 2 carbon atoms, and 6 hydrogen atoms.

  • A compound with 6 carbon atoms, and 12 hydrogen atoms.

  • A compound with 1 carbon atom, and 4 hydrogen atoms.

  • A compound with 3 carbon atoms, and 8 hydrogen atoms.

  • A compound with 4 carbon atoms, and 8 hydrogen atoms.

  • A compound with 10 carbon atoms, and 22 hydrogen atoms.

Explanation

Question 6 of 12

1

The test for alkenes is to add bromine water to an alkene, and it will turn from an orange colour to colourless.

Select one of the following:

  • True
  • False

Explanation

Question 7 of 12

1

Which of the following is not something chemicals in a homologous series have in common:

Select one of the following:

  • they have the same general formula

  • differ by one oxygen atom in molecular formulae from neighbouring compounds

  • show a gradual variation in physical properties

  • have similar chemical properties

Explanation

Question 8 of 12

1

Fill the blank space to complete the text.

Because alkanes only contain bonds between atoms, we describe them as saturated compounds.

Explanation

Question 9 of 12

1

Cracking involves the breaking down of larger, hydrocarbon molecules () into smaller, more useful ones: an shorter saturated , and alkene.

Drag and drop to complete the text.

    saturated
    unsaturated
    alkanes
    alkenes
    alkane
    alkene
    an unsaturated
    a saturated

Explanation

Question 10 of 12

1

The process of cracking is a thermal decomposition.

Select one of the following:

  • True
  • False

Explanation

Question 11 of 12

1

Select all the ways below that hydrocarbons can be cracked.

Select one or more of the following:

  • Large chain hydrocarbons are heated and passed over a hot catalyst

  • Large chain hydrocarbons are heated and are reacted with steam.

  • Large chain hydrocarbons are heated and cooled down extremely quickly

  • Large chain hydrocarbons are reacted with hydrogen gas with a catalyst present

Explanation

Question 12 of 12

1

is used in domestic heating and cooking
is used to surface roads and roofs
is used as fuel for aircraft
is used as fuel for cars
is used as fuel for large ships and power stations
is used as fuel for some cars and trains

Drag and drop to complete the text.

    gas
    bitumen
    kerosene
    petrol (gasoline)
    fuel oil
    diesel oil

Explanation

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