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Listed under:  Science  >  Matter  >  Properties of matter  >  Solubility
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VisChem topic 2: dissolution of an ionic salt

This web page contains a video clip, animations and student worksheets exploring the dissolving of ionic solids in water. The video clip has both filmed and animated scenes that compare the dissolving of sodium chloride with melting and show how the dissolving process can be represented by chemical equations. Important ...

Moving Image

Dyeing with red cabbage!

Many natural products, such as red cabbage and turmeric, can be used as a natural source of colour to dye fibres. Watch the dyeing demonstration in this clip to see how. Discover the chemistry of natural dyes, including the bonding properties of different pigments and how acid-base reactions can alter the colour of pH-sensitive ...

Interactive resource

Mystery substances: pure substances

Solve crimes by identifying pure substances. Carry out chemical tests on common substances such as salt, baking soda and sugar. Observe and record how each substance reacts with a range of liquids and to heating. Build up a data table of chemical properties and use it to match mystery substances found at crime scenes. This ...

Interactive resource

Mystery substances: pure and mixed substances

Solve crimes by identifying pure substances and components of mixtures. Carry out chemical tests on common substances such as salt, baking soda and sugar. Observe and record how each substance reacts with a range of liquids and to heating. Build up a data table of chemical properties and use it to match mystery substances ...

Interactive resource

Mystery substances: find the culprit

Solve crimes by identifying pure substances and components of mixtures. Carry out chemical tests on a mystery substance such as salt, baking soda or sugar. Observe and record how a substance reacts with a range of liquids and to heating. Refer to a data table of chemical properties and use it to match a mystery substance ...

Interactive resource

Mystery substances: emergency case

Solve crimes by identifying pure substances and components of mixtures. Carry out urgent chemical tests on common substances such as salt, baking soda and sugar. Observe and record how each substance reacts with a range of liquids and to heat. Build up a data table of chemical properties and use it to match a mystery substance ...

Interactive resource

Mystery substances: mixed substances

Solve crimes by identifying substances in mixtures. Carry out chemical tests on a mixture of common substances such as salt, baking soda and sugar. Observe and record how each substance reacts with a range of liquids and to heating. Refer to a data table of chemical properties and use it to match mystery substances found ...

Interactive resource

Kitchen chemistry: experiment and mystery: level 1

Test the physical properties of kitchen substances such as pepper, detergent and butter. See whether they float or sink, foam or dissolve in hot or cold water. Test whether stirring makes a difference. Test and identify two substances such as cream or peanut butter. This learning object is a combination of two objects in ...

Interactive resource

Kitchen chemistry: experiment and mystery: level 2

Test the physical properties of common substances such as salt, detergent and cream. See whether they float or sink, foam or dissolve in hot or cold water. Test whether stirring makes a difference. Test and identify three mystery substances such as honey, shampoo or methylated spirits. This learning object is a combination ...

Interactive resource

Kitchen chemistry: experiment: level 1

Test the physical properties of kitchen substances such as raw sugar, olive oil or salt. See whether they float or sink, foam or dissolve in hot or cold water. Test whether stirring makes a difference. This learning object is one in a series of four learning objects. The series is also packaged as two combined learning objects.

Interactive resource

Kitchen chemistry: experiment: level 2

Test the physical properties of kitchen substances such as cream, detergent or bicarbonate of soda. See whether they float or sink, foam or dissolve in hot or cold water. Test whether stirring makes a difference. This learning object is one in a series of four learning objects. The series is also packaged as two combined ...

Interactive resource

Kitchen chemistry: solve the mystery: level 1

Test the physical properties of two unknown kitchen substances such as cream or olive oil. See whether they float or sink, foam or dissolve in hot or cold water. Test whether stirring makes a difference. Look up a data table of known properties and identify the unknown kitchen substances. This learning object is one in ...

Interactive resource

Kitchen chemistry: solve the mystery: level 2

Test the physical properties of three unknown kitchen substances such as detergent, cream or olive oil. See whether they float or sink, foam or dissolve in hot or cold water. Test whether stirring makes a difference. Look up a data table of known properties and identify the unknown kitchen substances. This learning object ...

Interactive resource

Making water drinkable: mixtures

Look at the differences between elements, compounds and mixtures. Notice that water is a compound that dissolves many substances. See how rainwater is treated to remove unwanted substances. Notice that purifying water involves separating mixtures. Explore how solutions form and how solubility is affected by temperature. ...

Interactive resource

Solubility and temperature

Find out how water temperature affects the solubility of a solid. Add potassium nitrate to water, and stir the solution to dissolve the salt. Keep adding the salt until no more will dissolve. Once a saturated solution is obtained, record the water temperature and the maximum amount of solvent added. Experiment with a range ...