Litmus paper is a crucial supply for any laboratory, and is used in classrooms of all grade levels. These one hundred neutral strips of litmus paper can be used to determine the pH category of a substance. By way of a mixture of dyes extracted from lichens, they tell you whether the substance is acidic or basic. If the substance is a base, the paper will turn blue. If the substance is acidic, the paper will shift its color to red, allowing you to know whether you’re dealing with an acid or a base in your experiments. The paper will also remain the same color in the presence of a neutral substance. A highly useful tool for basic chemistry.
Caution! The fun found in this potato clock kit will SHOCK you!
The Duncan Phoenix Diabolo features a stable, hard rubber shell that retains its shape.
Build a robot that's an artist too!
It's fun to be smart with this fast-paced board game!
With this cool electronic kit you get to assemble your own mini electric guitar!
Build a model green house and 9 other green energy-related devices with this great kit!