All Problem solving articles – Page 5

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    Boiling point

    This activity is designed to help students develop their critical thinking (evaluative) skills. They are presented with a surprising measurement for the boiling point of water and several suggestions as to why it might be. The main task is to evaluate the different suggestions.

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    The fluorofen problem

    The exercises in this book can be used to address aspects of communication skills, or can be run as a complete module. This section focuses on team work.

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    A chemically powered boat - a bubble race

    Design and make a boat propelled by the reaction between 1 teaspoon of bicarbonate of soda (sodium hydrogencarbonate) and 3 teaspoons of citric acid.

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    In Search of More Solutions

    In Search of More Solutions provides material for chemical “egg race” competitions that help to put the fun back into chemistry, and gives students that “little bit extra” to motivate them to follow a scientific or technical career. Follow the links below to buy a copy from our online ...

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    Warning device

    Design a warning device that will give out a signal when activated. The device must be powered by the chemical reaction between 3 level teaspoons of citric acid and 1 level teaspoon of bicarbonate of soda.

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    Test the gas

    Design a piece of apparatus to allow you to obtain a sample of the gas without removing the gas jar from the water and demonstrate that the gas is carbon dioxide.

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    An elementary problem

    From the information given, determine which company has ordered which chemical, which process is involved, and on what week day are they to be delivered.

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    The ups and downs of chemistry

    In Search of Solutions: Challenge pupils to balance sinking against floating, with a toy submarine concept. Linking to topics on solubility, acid/base chemistry, density.

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    Pigments

    In Search of Solutions: Chromatography is used to identify unique pigments extracted from various plant materials. Linking to topics on chromatography and extraction.

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    Quick jelly

    In Search of Solutions: Save time in the kitchen by finding the fastest way to dissolve jelly cubes. Linking to topics on rates of reaction and dissolving.

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    Lesson plan

    Determining the structure of compounds | 16-18 years

    Examine data relating to the structure and complexity of compounds, including mass, infrared and NMR spectra, in this workshop lesson plan for 16–18 year olds.