pH paper is used to measure the acidity or base of substances. It is measured on a scale of 1 to 14; 1 being most acidic, 14 being most base, and 7 being perfectly neutral. There are many household items which can be measured. For example, lemon juice is an acid, whereas kitchen soap is a base. Have fun testing other substances with this small vial consisting of approximately 100 pH paper strips and a color-coded pH range chart. Great for use at home, in science projects, in the classroom or at the lab, there’s plenty of paper to go around, and countless experiments to conduct!
Small booklet that gets you started in the wonderful world of rocks, minerals and crystals.
Command robotic creations with this cool construction kit!
Use this awesome prism to teach about optics and light in the classroom setting!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Every kid needs one of these spheres!
Investigate the most important phenomena in biology, chemistry, and physics by conducting more than 100 fun experiments!