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GCSE Chemistry (Chemistry 2) Quiz on GCSE AQA Chemistry 2, created by Lilac Potato on 29/11/2015.

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GCSE AQA Chemistry 2

Question 1 of 32

1

Select from the dropdown list to complete the text.

The mass number tells you the total number of protons and neutrons. Electron aren't counted in this number because their relative atomic mass is ( negligible, extremely large, negative ).

Explanation

Question 2 of 32

1

Which of these 2 statements describes a compound?

Select one of the following:

  • Compounds are two or more elements chemically bonded together

  • Compounds are two or more elements which are not chemically bonded together

Explanation

Question 3 of 32

1

Isotopes are different atomic forms of the same element which have the same number of neutrons but a different number of protons.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 32

1

In ionic bonding, atoms lose or gain electrons to form charge particles (ions). Atoms from groups 1 and 2 are more likely to electrons.

Drag and drop to complete the text.

    lose
    gain

Explanation

Question 5 of 32

1

Which of the following statements are true about ionic compounds?

Select one or more of the following:

  • They have giant ionic lattices

  • There are very strong electrostatic forces of attraction between oppositely charged ions

  • They have high melting and boiling points

  • They dissolve easily in water

  • They have small ionic lattices

  • There are very weak electrostatic forces of attraction between oppositely charged ions

  • They have low melting and boiling points

  • They don't dissolve easily in water

Explanation

Question 6 of 32

1

Covalent bonding involves sharing electrons to obtain full outer shells. These are strong bonds.

Select one of the following:

  • True
  • False

Explanation

Question 7 of 32

1

Which of these are features of simple molecular substances?

Select one or more of the following:

  • They have weak intermolecular forces

  • They have low melting and boiling points

  • They don't conduct electricity

  • They have strong intermolecular forces

  • Thy have high melting and boiling points

  • They conduct electricity

Explanation

Question 8 of 32

1

Fill the blank space to complete the text.

Graphite is the only non-metal which is a good conductor of heat and electricity. This is because each carbon atom has one .

Explanation

Question 9 of 32

1

Metals can be bent or shaped as the delocalised electrons allow the layers of atoms to slide over each other.

Select one of the following:

  • True
  • False

Explanation

Question 10 of 32

1

What size are nanoparticles?

Select one of the following:

  • 1-100 nm across

  • 100-1000 nm across

  • 0-1 nm across

Explanation

Question 11 of 32

1

Many new uses of nanoparticles are being developed: which of these can they be used for?

Select one or more of the following:

  • Catalysts

  • Sun cream and deodorants

  • Nanomedicine

  • Lubricant coatings

  • Electrical circuits

  • Hand warmers

  • Plastic bags

  • Making alloys

Explanation

Question 12 of 32

1

Fill the blank space to complete the text.

Thermosetting polymers have which hold the chains together in a solid structure.

Explanation

Question 13 of 32

1

How do you work out number of moles?

Select one of the following:

  • mass/relative formula mass

  • relative formula mass/mass

  • relative formula mass * mass

Explanation

Question 14 of 32

1

Yields are always less than 100%, this may be because:

Select one or more of the following:

  • the reaction is reversible

  • when you filter a liquid to remove solid particles, you usually lose some of the liquid/solid

  • unexpected reactions happen

  • there are no reactants

  • you don't do the experiment in industrial conditions

Explanation

Question 15 of 32

1

Name two ways of identifying substances.

Select one or more of the following:

  • Paper Chromatography

  • Gas Chromatography

  • Solid Chromatography

  • Colour Chromatography

Explanation

Question 16 of 32

1

Fill the blank space to complete the text.

The rate of a reaction depends on four things: temperature, , catalyst and surface area.

Explanation

Question 17 of 32

1

Which of these methods of measuring the rate of a reaction is the most accurate?

Select one of the following:

  • Precipitation: observing a mark through the solution and measuring how long it takes for the mark to disappear

  • Change in mass: carry experiment out on a mass balance and observe how mass disappears (as gas is released)

  • Volume of gas given off: Use a gas syringe to measure volume of gas given off

Explanation

Question 18 of 32

1

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The reaction between HCl acid and marble chips can be sped up by using finer particles of solid as it has a ( larger, smaller ) surface area.

Explanation

Question 19 of 32

1

Higher temperature increases the number and energy of collisions which means it takes more time for the particles to have enough energy to start the reaction.

Select one of the following:

  • True
  • False

Explanation

Question 20 of 32

1

Fill the blank space to complete the text.

A is a substance which speeds up a reaction without being changed or used up in the reaction.

Explanation

Question 21 of 32

1

Which of these are disadvantages of catalysts?

Select one or more of the following:

  • Very expensive to buy

  • Different reactions require different catalysts

  • Catalysts can be poisoned by impurities

  • They are harmful to people

  • They are very rare

Explanation

Question 22 of 32

1

Which of these are examples of exothermic reactions?

Select one or more of the following:

  • Combustion

  • Neutralisation reactions

  • Respiration

  • Sports injury packs

  • Photosynthesis

Explanation

Question 23 of 32

1

Fill the blank space to complete the text.

An alkali is a that dissolves in water.

Explanation

Question 24 of 32

1

Acid + Metal ------> Salt + Oxygen

Select one of the following:

  • True
  • False

Explanation

Question 25 of 32

1

Fill the blank space to complete the text.

Ammonia + Nitric acid ------->

Explanation

Question 26 of 32

1

Which of these are methods of making soluble salts?

Select one or more of the following:

  • Using a metal/insoluble base

  • Using an alkali

  • Precipitation reactions

Explanation

Question 27 of 32

1

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An electrolyte contains free ( ions, electrons, atoms ) which conduct electricity.

Explanation

Question 28 of 32

1

Oxidation is loss of electrons and reduction is gaining electrons.

Select one of the following:

  • True
  • False

Explanation

Question 29 of 32

1

In electrolysis, at the electrode, if metal and H+ ions are present, the metal ions will stay in solution is the metal is reactive than hydrogen.

Drag and drop to complete the text.

    more
    less
    negative
    postive

Explanation

Question 30 of 32

1

Uses of chlorine:

Select one or more of the following:

  • Bleach

  • Plastics

  • Plating metals

Explanation

Question 31 of 32

1

Fill the blank space to complete the text.

Cryolite is used to the temperature needed to melt aluminium oxide.

Explanation

Question 32 of 32

1

In electroplating, you put the thing you want to plate at the positive electrode.

Select one of the following:

  • True
  • False

Explanation

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