![]() Because students rarely understand the concept of ‘a substance’ they don't see substances being changed. For example they see smoke as part of the wood that is somehow released when the wood burns. However at this level students don't see new materials being produced as a result of chemical change, rather they see that existing materials have merely been modified in some way. They are familiar with burning, cooking, rusting and chemical processes that appear to involve dissolving. Contrasting student and scientific viewsĬontrasting student and scientific views Student everyday experiencesĬhildren will have experienced many examples of chemical change without actually realising it.
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