Tag: GCSE
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The Winkler Method – Biological Oxygen Demand BOD
The Winkler method is a widely used analytical technique for determining the amount of dissolved oxygen in water samples. Dissolved oxygen is essential for aquatic life and is an important indicator of water quality. The Winkler method involves the addition of reagents to a water sample that react with dissolved oxygen to produce a measurable…
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Demonstrating Group 1 Metals with Water
Objective: To observe the reactivity of Group 1 metals (alkali metals) with water. Materials: Safety Information: Procedure: Assessment: Students can be assessed through their observations and participation in the experiment, as well as their ability to answer questions about the properties of alkali metals and their reactions with water. Extension: Students can research other reactions…
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10 Best Chemistry Education Apps
10 Best chemistry education apps
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Calculating the empirical formula of magnesium oxide. Classic chemistry experiment that always yields great results.
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Quantitative Chemistry – calculating the percentage composition of iron in iron tablets.
Iron tablet titration is a common laboratory method used to determine the amount of iron present in a sample, such as an iron supplement tablet. This method involves reacting the iron in the tablet with a solution of potassium permanganate (KMnO4) to produce a purple colour. The endpoint of the titration is reached when the…
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