KS3 ~ Year 7 ~ Exothermic & Endothermic Reactions

This lesson is designed for the Activate KS3 Science Course, specifically Year 7 C3 ’Reactions’.

For more lessons designed for KS3 and KS4 please visit my shop at: https://www.tes.com/teaching-resources/shop/SWiftScience.

This lesson begins with an introduction to different examples of exothermic reactions, this includes video links to more exciting exothermic reactions like the thermite reaction and the screaming jelly baby. Students are also told the definition for an exothermic reaction.

Students are now asked to consider what an endothermic reaction is, now that they know the definition for an exothermic reaction. Students are asked to ‘think > pair > share’ their ideas, eventually feeding back into a class discussion and the definition can then be revealed, as well as two two examples.

Students will now watch a video on exothermic and endothermic reactions, whilst watching the video they will answer a set of questions. Once this task has been completed, students can self-assess their work against the mark scheme provided on the PowerPoint.

Students will now complete an investigation to identify whether a set of three chemical reactions are exothermic or endothermic. They will start the reaction and then measure the temperature over a set period of time, finally working out the change in temperature to determine which type of reaction has occurred. Students can follow instructions on the practical worksheet and record their results in a table drawn into their books.

Finally, students will complete a ‘quick check’ task - whereby they will need to answer a question on the topic of the lesson, this can then be checked against the answer provided on the PowerPoint.

The plenary task is an anagram challenge, students need to unscramble a set of anagrams which then spell out a set of key words from the last few lessons on reactions.

All resources are included at the end of the presentation. Thanks for looking, if you have any questions please let me know in the comments section and any feedback would be appreciated :)