All Separation articles – Page 3

  • A photograph showing apparatus for filtering mixtures, including conical flasks, glass funnels and filter paper
    Experiment

    Separating sand and salt by filtering and evaporation

    In association with

    Try this class experiment to practise manipulating mixtures of soluble and insoluble materials by separating sand and salt. Includes kit list and safety instructions.

  • Colour powder
    Experiment

    Colour chemistry

    A variety of experiments that explore colour changing, so learners can experience a comprehensive look into the brighter side of chemistry

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    Resource

    Chemistry and food security

    This context/problem-based learning (C/PBL) resource is part of a collection we have commissioned for you to use with your undergraduate students. This 5 credit module is based on the following scenario:This resource will give your students an introduction to food safety and DNA analysis. It is based on DNA and ...

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    Resource

    The life raft

    Evaluate the advantages and disadvantages of a selection of resins and decide which one(s) would be best for producing pure water from sea water on a life raft.

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    Resource

    Dean-Stark apparatus

    There are many equilibrium reactions that yield water as a co-product. It is the co-produced water that prevents a high yield of product being obtained. The removal of the water is necessary to drive the reaction to completion and this is done using Dean-Stark apparatus. The reaction is carried out ...

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    Resource

    Distillation

    Distillation separates liquids on the basis of them having different boiling points. Video: Distillation video

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    Resource

    Recrystallisation

    Recrystallisation is a means of purifying solids. If carried out correctly the final product will be both of a high yield as well as pure. Video: Recrystallisation video

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    Resource

    Vacuum filtration

    When a solid needs to be isolated from a solution it is normally done at a reduced pressure using a Buchner flask and Buchner funnel. Video: Vacuum filtration video

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    Resource

    Space: science ideas webs

    A web of suggested ideas for linking science with the topic space. You can learn history and science together with activities for different age groups.

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    Resource

    Ancient Egypt: science ideas webs

    A web of suggested ideas for linking science with the topic Ancient Egypt. You can learn history and science together with activities for different age groups. 

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    Resource

    The Vikings: science ideas webs

    A web of suggested ideas for linking science with the topic the Vikings. You can learn history and science together with activities for different age groups. 

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    Resource

    The golden age of Islamic science: science ideas webs

    A web of suggested ideas for linking science with the topic the golden age of Islamic science. You can learn history and science together with activities for different age groups. 

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    Resource

    World War II: science ideas webs

    A web of suggested ideas for linking science with the topic World War II. You can learn history and science together with activities for different age groups. 

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    Resource

    Na Lochlannaich: lìontan nam beachdan saidheans

    Lìon nam beachdan mollaichte airson ceangal a dhèanamh eadar saidheans agus an cuspair na Lochlannaich. Faodaidh tu eachdraidh agus saidheans ionnsachadh còmhla le gnìomhachasan airson buidhnean de dh’aoisean diofraichte

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    Resource

    An Dàrna Cogadh: lìontan nam beachdan saidheans

    Lìon nam beachdan mollaichte airson ceangal a dhèanamh eadar saidheans agus cuspair An Dàrna Cogadh. Faodaidh tu eachdraidh agus saidheans ionnsachadh còmhla le gnìomhachasan airson buidhnean de dh’aoisean diofraichte

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    Resource

    Manufacturing sodium carbonate by the Solvay process

    An account of the Solvay process. This resource is part of the ‘Sodium carbonate – a versatile material’ resources collection, which presents learning material based on the manufacture and uses of sodium carbonate made by the Solvay (ammonia-soda) process.  

  • A close-up photograph of a sample of copper ore, with patches of a distinctive blue-green colour, against a neutral background
    Experiment

    Colourimetric determination of copper ore

    In association with

    Use this practical to introduce students to the determination of copper ore by colourimetry using copper(II) sulfate. Includes kit list and safety instructions.

  • Macro photograph of white alum crystals
    Experiment

    Purifying an impure solid

    In association with

    Purify alum as an example of obtaining a pure chemical from an impure sample in this class practical. Includes kit list and safety instructions.

  • Five leaves representing different stages of turning brown, from completely green to yellow to fully brown
    Experiment

    Leaf chromatography

    In association with

    Try this class practical to use paper chromatography to separate and investigate the pigments in a leaf. Includes kit list and safety instructions.

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    Resource

    The isolation of the platinum group metals │16–18 years

    A comprehension exercise on the solvent extraction of platinum, supported by a demonstration of the partition of iodine between two solvents