Scholars think color-change tests are the best! Show them how to differentiate between alkanes and alkenes using a short video. The narrator guides them through the test and the reactions that occur for alkenes. Other topics include saturated and unsaturated hydrocarbons.

Concepts

organic chemistry, alkanes, alkenes, bromine, double bonds, chemical reactions, covalent bonds

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Additional Tags

science

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Instructional Ideas

• Perform the test as a demonstration after the video and have pupils submit their observations as an exit ticket
• Incorporate this into a lab experiment where partners determine the amount of bromine water needed to react with a given amount of an alkene to produce a clear solution

Classroom Considerations

• The class should be familiar with alkanes, alkenes, and the properties of bromine prior to viewing the resource

Pros

• Structural equations provide learners with a visual representation of each reaction
• Animations show step by step the best way to perform the test and how to interpret the results

Cons

• None