A 5 minute demo and 55 minutes of "class" is better than 60 minutes of "class!" ~ Lee Merrick
Students are presented with four beakers each containing a clear liquid, but are they all the same? You, the teacher, will demonstrate a couple of different tests to show that they are not in fact all the same. Use this to show Einstein's "No number of experiments can prove me right; a single experiment can prove me wrong" idea or as a lead in to lab safety.
Easy, quick and fun. Just a little "somethin-somethin" I use at the start of my school year. I hope you enjoy this demonstration. If you like it, check out some of the other items I have available and follow me on TpT.