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Chemistry and Our Earth

Assignment 1: Elements, Mixtures and Compounds

Scenario:

You are working for an Electric Powered Car company that use batteries and hydrogen fuel cells. Your task is to prepare part of a technical brochure explaining the difference between some of the elements, mixtures and compounds used in the technologies.

If you wish to make a comment about this assignment or reply to the postings please use the comment box at the bottom of this page.

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1 Elements Mixtures and Compounds
  • Assignment Resources 4 resources

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    1 Worksheet U1 1.1
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    2 Worksheet U1 1.1 (an example)
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    3 Worksheet U1 1.2
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    4 Car Cards for Circus Activity
  • Supporting Resources 3 resources

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    1 The Preparation of Iron Sulphide
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    2 How much air is used during in rusting?
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    3 The Electrolysis of Water
  • Technician's Notes 1 resource

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    1 Assignment U1 1 Technicians Notes

2 Responses to “Elements Mixtures and Compounds”

  1. v.hampshire@stacs.bham.sch.uk says:

    I have just started the Chemistry unit with my bottom set year 9’s. P1 and M1 is very straight forward due to the clear guidance provided. I am getting myself bogged down with level of detail for D1 and would appreciate some clarification from anyone who has already completed this unit.

    For D1, is it sufficient to mention:
    1) Magnestism, floating/sinking, reactions with an acid for Iron/Sulphur/mixture of Iron and Sulphur/Iron Sulphide?

    2) The different gas tests for hydrogen and oxygen. Or do we need to mention fractional distillation of air?

    3) Equation showing the formation of water with particle diagrams, explanation that water can only be separated using large amounts of energy i.e. electricity using the Hoffman Voltometer.

    Many thanks in advance!
    Vicks 🙂

  2. sandy says:

    With respect to your question about D1; although many students have now done assignment 1 I suspect that few will have got to the distinction level, but as you rightly imply the brief must make this possible for them. It is my understanding that the criteria for D1 (Explain how the structure of different chemicals affects their properties) requires both a mention about their structure (formulas and particle diagrams would be good for this) AND their properties (magnetism , solubility, state at room temperature etc.) and as long as this is used to explain how a mixture of say iron and sulphur is not the same as iron sulphide (etc.) this is probably OK. Where I have heard criticism of assignment briefs it has been the wording of the task for D1 not being explicit enough to include the above. I would also recommend EDEXCEL’s ‘Ask the Expert’ on-line service which will give very prompt definitive answers about assignment briefs.

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