The Science Class site has some excellent experiments, videos and demonstrations of physical changes and chemical reactions. This one is about observing the changes when a sugar cube is heated: changing_sugar.pdf Have you ever seen spaghetti dance? You can do this experiment with sultanas as well.
Check out our Voicethread here: Physical or Chemical Change?
Watch our video here: Four Simple Chemical Experiments
Year 8 students performed these experiments during the last week of term – are they physical changes or chemical reactions?
1.Heating Copper carbonate
2. Mixing Hydrochloric acid and Magnesium metal.
3. Mixing Barium chloride and Sodium sulphate.
4. Mixing Steel wool and Copper sulphate.