Rainbow Fizz

Worksheet and ppt for Acids and Alkalis lesson focussing on observations and revision of neutralsatin and indicators. I usually use it as a revision lesson and get them to make observations and note down what happens at each step of the reaction. If measured out properly by a technician before hand and done carefully by the pupils (tilt the tubes when pouring as if you were layering a drink) the careful kids are rewarded with a beautiful rainbow effect in the test tube, the others learn to be more careful but are also able to make the observations at each step.