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GCSE Chemistry (Edexcel) Quiz on Edexcel (9-1) Topic 5, created by https:// revisechemistry.uk on 03/24/2018.

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Edexcel (9-1) Topic 5

Question 1 of 15

1

Where are the transition metals found in the periodic table?

Select one of the following:

  • On the left of the periodic table, in groups 1 and 2

  • In the middle of the periodic table, between groups 2 and 3

  • On the right of the periodic table, in groups 7 and 8

Explanation

Question 2 of 15

1

What two things must be present for iron to rust?

Select one or more of the following:

  • oxygen

  • water

  • carbon dioxide

  • ethanol

  • calcium carbonate

Explanation

Question 3 of 15

1

Why are alloys typically stiffer than pure metals?

Select one of the following:

  • The metallic bonding is stronger in alloys

  • The metal atoms are all very regularly arranged in an alloy

  • The layers of metal atoms in the alloy cannot slide over each other very easily

Explanation

Question 4 of 15

1

Fill the blank space to complete the text.

A student had calculated the theoretical yield of a product was 8 g. The actual yield obtained was 6 g. What was the percentage yield?

%

Explanation

Question 5 of 15

1

Which of the following could explain why the percentage yield in a chemical reaction was less than 100%?

Select one of the following:

  • The top pan balance was faulty

  • The reaction forms more than one product

  • Some of the product was lost during pouring liquids

Explanation

Question 6 of 15

1

Fill the blank space to complete the text.

The RFM of the desired product in a reaction is 95. The sum of the RFM values for the reactants is 113. What is the atom economy for this reaction?

%

Explanation

Question 7 of 15

1

Fill the blank space to complete the text.

A solution has a volume of 650 cm3. What is the volume of this solution in dm3?

dm3

Explanation

Question 8 of 15

1

Fill the blank space to complete the text.

A solution of NaOH has a concentration of 0.2 mol/dm3. Calculate its concentration in g/dm3. The RFM of NaOH is 40.

g/dm3

Explanation

Question 9 of 15

1

Fill the blank space to complete the text.

A sample of methane gas has a volume of 120 cm3 at room temperature and pressure. The molar volume is 24 dm3. How many moles of methane are present in the sample?

moles

Explanation

Question 10 of 15

1

Fill the blank spaces to complete the text.

What does NPK stand for in terms of fertilisers?
N -
P - phosphorous
K -

Explanation

Question 11 of 15

1

Which of the following statements about dynamic equilibrium is true?

Select one of the following:

  • The reaction has finished

  • The forwards and reverse reactions occur at the same rate

  • The concentration of reactants is the same as the concentration of products

Explanation

Question 12 of 15

1

Which of these factors does not affect the choice of reaction pathway in an industrial chemical manufacturing process?

Select one of the following:

  • The yield of product formed

  • The relative formula mass of the products

  • The uses for any by-products formed

Explanation

Question 13 of 15

1

Fill the blank space to complete the text.

What is the only chemical product when hydrogen and oxygen are reacted together in a fuel cell?

Explanation

Question 14 of 15

1

Rusting is a specific example of corrosion, and requires both and water for iron to rust. There are three ways to prevent iron from rusting:
- exclusion of (by either using an atmosphere of or argon)
- exclusion of (by storing with a desiccant)
- sacrificial protection (when a more reactive than iron is attached to the object to prevent from rusting)

Drag and drop to complete the text.

    air
    oxygen
    nitrogen
    water
    metal
    iron

Explanation

Question 15 of 15

1

Fuel cells will produce a voltage continuously, provided they have a constant supply of fuel and oxygen (from the air).

Select one of the following:

  • True
  • False

Explanation

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