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Reversible and irreversible changes
Try to dissolve various substances. You can also experiment with filtration and evaporation. Follow the instructions above the picture. There is a quiz afterwards to test your knowledge.

Compounds and mixtures Bitesize
Good revision material on compounds, mixtures and separating. Try the multiple choice quiz to test your knowledge.

ABPI Properties of solids, liquids and gases
Click the buttons at the bottom of the cartoon viewer in order to see a series of cartoons to help you to understand solids, liquids and gases.

Blockbusters - Solids, liquids, gases and mixtures
Click on the i button for instructions.

Blockbusters - Separating mixtures
Click the i button for instructions.

Separating mixtures (s-cool)
Read this page and watch the animations to find out how to separate different mixtures.

Word Fill: Solutions
Simple revision word fill covering the whole of unit 7H, Solutions

Matching Pairs: Solutions
Matching pairs exercise testing meanings of terms introduced during unit 7H (solute, solvent, saturated etc)

Crossword: Solutions
Small revision crossword covering the whole of unit 7H, Solutions. Larger harder version also available!

How a brine evaporator works
View the animation which shows how salt is obtained comercially by the evaporation of brine.

Dissolving particles
Try the quiz to test your knowledge on dissolving.

Compounds and Mixtures matching pairs
Matching pairs exercise to match molecular diagrams of elements, compounds and mixtures to their descriptions.

Industry animated.
Click on the links to access animations of industrial processes. What does the brine evaporator do?

Tour of Fawley Oil Refinery
use the buttons to view different parts of the refinery.

British Crystallographic Association
The British Crystallographic Association's education pages, with booklets on making crystals and models.

Particle Theory: Dissolving
Explanation of dissolving in terms of the particle model, from the University of Leicester's science education department

Separating material mixtures
Read 'salt and water' and the next page on chromatography then try the questions. Roll over words to change the diagrams.

Elements, compounds, mixtures and their separation
Use this site to find out about methods for separating mixtures.

Separating mixtures
This site gives good background information on methods for separating mixtures.

Chemical change
The first five 'slides' show how things dissolve.

Solutions and mixtures
Pages explaining the difference between solutions and mixtures.

Separating mixtures
View the web pages and animations and then try the quiz.

Watch the animation of a distillation experiment.

Solutions and suspensions
Use the buttons at the bottom left hand side to navigate through the pages. Explore to page 14.

Dissolving solids, liquids and gases
This page gives information on how solids, liquids and gases can all dissolve. The videos help you to understand how things dissolve.

This contains some excellent animations of how substances dissolve.

The effect of dissolved salt on the boiling point of water.
Describes an experiment you can do to find out how the amount of dissolved salt affects the boiling point of water.

Mixtures, solutions and separation
Read this page and watch the animations to investigate mixtures, including solutions and colloids.

Solutions and suspensions.
Roll your mouse over the highlighted words to see an animation of salt dissolving.

Salt dissolving movie.
Animation showing how salt dissolves in water.

Black magic
Use chromatography to find the hidden colours in black ink. You could also try other inks and dyes.

Separating mixtures - matching
Matching exercises on separating mixtures.

Compounds and Mixtures word fill
Word fill linking states (s, l, g) and properties (element / compound / mixture) with common substances

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 separation techniques
 solubility and solvents
 saturated solution
 fractional distillation
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