Question: What was your favourite science experiment when you were at school?

Reka Nagy answered on 9 Nov 2016:

Hmm, I really liked chemistry experiments where we mixed together different chemicals that were see-through and suddenly they made something that was really colourful.

Also, in physics, we observed changes in electrical signals using an oscilloscope – that’s a device that looks like this:
It was really cool to see how the wave became a different shape as we changed the electrical signal!