A physical phenomenon called quantum tunnelling is rare in chemical reactions, making it difficult to study theoretically and experimentally. The measurement of the tunnelling rate in a hydrogen ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Don't forget to take a ruler and scientific calculator into the exam. Maths questions often start with the command word calculate. You need to use numbers given in the question to work out the answer.