You can perform an orange to black chemistry demonstration using materials commonly found in stores. The reaction appears to be similar to the Old Nassau reaction, but uses greener reagents. This is a great demonstration to do around Halloween time.
Build a propane gun for your students! Construction is inexpensive, easy, and the effects are spectacular.
The “Elephant Toothpaste” experiment is a very popular, albeit messy chemistry demonstration. To carry out this experiment, place a 250 mL graduated cylinder on something that you wouldn’t mind getting messy. Next, add 75 – 100 mL of 30% hyd
I expect that most high school chemistry teachers assign some type of laboratory related to types of chemical reactions including synthesis, decomposition, single replacement and double replacement reactions. I have used several published versions, but I am sharing my modifications.
20 minutes prep, 40 minutes laboratory, 15-20 minutes discussion
The conductivities of a sulfuric acid solution and a barium hydroxide solution are tested, and will be the basis for monitoring a simple titration.
As a barium hydroxide solution is added to a sulfuric acid solution, the solution's conductivity gradually decreases. When the acid is consumed, the conductivity approaches zero, then rises again as more base is added.