C3 quiz

Just a quiz to test your knowledge on c3! Includes a range of topics! Good luck (: xxxx

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Name some properties of transition metals

  • Form coloured compounds
  • High density
  • High melting/boiling points
  • less reactive than group 1 metals
  • Used as catalysts
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Name some properties of halogens (Group 7)

  • React with metals to form halides
  • Colourful
  • Poisonous
  • Melting point decreases
  • 7 outer shell electrons
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Halogen + Metal = ?


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Sodium + Chlorine = ?

Sodium Chloride

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What is displacement?

When a more reactive halogen replaces a less reactive halide

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Displacement example: Fluorine + Sodium chloride =

Sodium fluoride + chlorine

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What ions make water hard?

Calcium (Ca2+) AND Magnesium (Mg2+)

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How is scum formed?

When hard water reacts with soap

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Can soft water lather easily with soap?


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What is scum?

When calciumor magnesium ions from hard water and stearate ions from soap form an insoluble precipate 

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What are the two types of hard water?

Temporary and permenant

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How can temporary hard water be softened?

By heating it as it will decompose

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Describe how an ion exchange column can soften per

The exchange column has a resin that contains sodium or hydrogen ions.

Once the hard water passes through the resin, the sodium/hydrogen ions replace the calcium/magnesium ions in the hard water.

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Why is chlorine added to hard water?

To kill harmful bacteria/disinfect 

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Why is a catalyst used?

To lower the activation energy

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What is simple calorimetry?

A method used to measure neergy given out in a combustion reaction

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What did Dmitri Mendeleev do to improve the period

  • He left gaps for any undiscovered elements
  • Recalculated atomic masses
  • Lined up elements with similar properties
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Name some properties of alkali earth metals (Group

  • Very reactive (Stored under oil)
  • One outer shell electron
  • Low density
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Explain why the reactivity increases as you go dow

The outer most shell is further away from the positively charged nucleus.

This means the outer most electron has a weaker force and therefore can easily be lost.

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Explain why the reactivity decreases as you go dow

The number of shells increases

This means there is a weaker attraction between the outer most electron and the nucleus

It becomes less easy to gain an electron

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Why is titration used?

To find out how much acid is needed to neutralise an alkali

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What indicator would we use for a strong acid + a

Methyl orange

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What indicator would we use for a weak acid + a st


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Why do we carry out flame tests?

To test for metal ions

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What colour flame is potassium?


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What are the first three members of a homologous s




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What do alcohols react with to produce hydrogen?


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What can ethanol be oxidised to?

Ethanoic acid

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What's the functional group of the carboxylic acid


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Carboxylic acids dissolve in water to produce...?

acidic solutions

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How can we tell if an acid is weak?

If it doesn't ionise completely when dissolved in water

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What is the functional group for esters?


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Ethanol + Ethanoic acid =

Ethyl Etahnoate

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