Explains the differences between solids, liquids and gases via a particle model.
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Chemical Reactions
Lesson Materials
Eight interactive experiments (Dyfan Williams - Ysgol y Moelwyn - Gwynedd)
Interactive experiments - bilingual (Dyfan Williams - Ysgol y Moelwyn - Gwynedd)
Specific examples of acids and alkalis on the pH scale. (Dyfan Williams, Ysgol y Moelwyn, Gwynedd)
Demonstrating how particle size affects the rate of reaction between limestone and dilute acid.
Whiteboard activities on chemical reactions, including how to make observations of reactions.