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!
Build a jungle robot which moves hand over hand like an orangutan or walks like a gorilla.
See the surface of the moon with this high-quality beginners telescope.
This kit will get your paper plane ready for takeoff!
This great rock tumbling kit comes with everything you need to polish stones and gems!
Get swept away by this fantastic robot kit that uses vibrations to move!
21 awesome electronics experiments on a custom-made plastic circuit board - build alarms, polygraphs, and more!