All Resource articles – Page 43

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    Soxhlet extraction

    When a compound of low solubility needs to be extracted from a solid mixture a Soxhlet extraction can be carried out. The technique places a specialised piece of glassware in-between a flask and a condenser. The refluxing solvent repeatedly washes the solid extracting the desired compound into the flask. ...

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    Mission starlight

    The mission? To protect astronauts from the effects of harmful UV light

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    Interactives rock cycle

    2016-06-13T13:51:00Z

    This tutorial gives students information about types of rocks and how they are formed and change as they progress through the rock cycle. The tutorial contains numerous animations and a quiz to test students which provides feedback.This resource has been developed by Annenberg Learner.

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    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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    The Victorians: science ideas webs

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

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    The Stone Age: science ideas webs

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

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    Maya and Aztecs: science ideas webs

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

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    The Romans: science ideas webs

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

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    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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    The Tudors: science ideas webs

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

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    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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    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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    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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    Ancient Greece: science ideas webs

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

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    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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    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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    Weighing compounds using a balance

    Weighing is done to ensure the correct amount of a reactant is added to a reaction, for the preparation of standard solutions or the weighing of a product to calculate a yield. Video: Weighing compounds using a balance video

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    Fractional distillation

    Fractional Distillation is used to separate compounds with boiling points that are close. Video: Fractional distillation video

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    Using a rotary evaporator

    A rotary evaporator is used to remove large amounts of solvent from solutions at a reduced pressure. This is often done to isolate a product from a chromatographic separation or a solvent extraction. Video: Using a rotary evaporator video

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    Running an infrared spectrum

    Infrared (IR) spectroscopy is a technique which reveals the bonds present in a compound and therefore can be used to identify functional groups. A sample of reaction product can be analysed to confirm its composition by comparison to a pure sample, or to judge the extent of reaction by comparison ...