step into my classroom: acids and bases

A few weeks ago we wrapped up a unit on matter in Science 6. We did a lab to determine the acidity or alkalinity of common household substances and the students just loved watching the litmus paper magically change into brilliant colors. I also spent the whole previous evening concocting a huge pot of cabbage juice indicator, but those results weren't as brilliant. All I ended up with was a stinky kitchen, and lots of purple juice. For whatever reason, it just didn't change colors like all the Pinterest tutorials promised. So, here are some shots from the lab.