Amber

 Really old-fashioned static electricity using Amber to pick up pieces of paper. The more you clean and polish it the dirtier it becomes

Electrostatics

 Electrostatics - there is nothing like a Wimshurst machine to demonstrate electrostatics: hand powered and can be done very slowly - does all the tricks of a Van de Graaff Generator and watch the gold leaf electroscopes that are within  a few metres respond

The mass of a volatile liquid

 Determining the volume of a mass of a volatile liquid at 100 Celcius. Quite a tricky experiment to get right. Patience is required to get the apparatus hot enough. But the idea of how much bigger a gas is comes through

Matrices

 Learning about Matrices. Finding determinants, calculating inverse Matrices and trying to solve 3 variable simultaneous equations. A level further Maths

GCSE Optics

 Looking at how a flame is turned upside down as the image passes through a lens and reflected on a screen at the far end. Using the optics bench with the scale built in we quickly worked out the relationships to achieve this

Dissecting a Lamb Pluck

 Dissecting a lamb pluck, inflating the lungs, examining the heart, and looking at the diaphragm and the liver. The lungs differ from what the books show,  in and the hole to the lungs before the bronchioles.

Hydrocarbon burning

 

@chemix diagram helped the students go from the design to the reality in minutes.