This edition includes the director's thoughts on the value of practical work and notes on risk assessments, apparently bargain price school chemicals, using chemical rockets, disposal of microbiology .. more

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Sulfuric(VI) acid does not exhibit the usual properties of an acid unless it is dissolved in water. In this activity, the concentrated acid acts as a dehydrating agent, removing the water of crystalli.. more

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Preparing salts is a common activity at GCSE level, bringing together many useful skills. Making copper sulfate crystals (PP027), which involves making copper(II) sulfate from copper(II) oxide, is the.. more

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Small-scale method for determining the mass loss when heating a hydrated salt to constant mass (of anhydrous salt). The method, which uses a mini spirit burner and an alternative crucible, reduces the.. more

words matched: crystallization