AQA Chemistry Paper 2 revision

During the process of fractional distillation, the petroleum compounds are separated according to the difference in their _______________.

• boiling point
• density
• unsaturation
• mass

Which of the following compounds is an example of hydrocarbon?

• CO₂
• C₂H₆
• C₂H₅OH
• CH₃COOH

At which pipe: M or N are hydrocarbons with lower boiling points collected?

• M
• N

How does the temperature change from top to bottom?

• Increases
• Decreases
• It does not change
• Cannot be determined

Tags

NGSS.HS-PS3-4

NGSS.HS-ESS2-3

NGSS.HS-PS3-2

How many carbon atoms are in ethane?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

If an alkane has 10 carbon atoms, how many hydrogen atoms will it have?

• 20

• 22

• 40

• 42

What are the products of combustion if there is plenty of oxygen available?

• carbon monoxide and hydrogen
• carbon dioxide and water
• carbon dioxide and hydrogen
• carbon monoxide and water

In fractional distillation, longer length hydrocarbons are found where in the distillation column?

• Top
• Bottom

Which of these would help us to conserve natural resources? Select three answers.

• Recycling paper from newspapers

• Using fuels made from sugar rather than fossil fuels

• Putting rubbish in a landfill

• Passing down clothes from older children to younger children

• Using cheap metals like steel rather than titanium

Which of these cannot be removed by passing water through filter paper alone? Select two answers.

• Dissolved chemicals e.g. laundry powder

• Particles of grit and silt

• Dead insects

• Unwanted colours or smells