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!
A massive mounted set of 100 rocks and minerals found in the US,
An ancient toy featuring optical illusion and hands-on fun that never grows old!
With this cool electronic kit you get to assemble your own mini electric guitar!
Build over 100 exciting electronic projects with this easy to use kit!
This toy combines the wonders of Sea Monkeys and glow-in-the-dark fun, all in one!
This kit will get your paper plane ready for takeoff!