British astronaut Tim Peake has invited schoolchildren to help him in an experiment to learn more about how to grow food in space. Major Peake wants pupils to plant the seeds of rocket leaves that ...

It may be appropriate at this stage to compare reversible (physical) changes with irreversible (chemical) changes. Review the following animation and fact sheet. Chemistry in the kitchen; celebrity ...

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In small groups, ask pupils to think of other foods which change when they are cooked. Take feedback from pupils on what they discussed. Use their information to list the main characteristics of ...