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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Interactives rock cycle
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 ...