What is a wax pencil and how is it used in chemistry?

Answer 1

A wax pencil (or grease pencil) is often used to label test tubes in a laboratory. Wax pencils are used to mark non-porous surfaces, like glass, and are easy to clean off for re-use (with warm, soapy water).

Answer 2

A wax pencil is a writing tool that uses a colored wax stick instead of graphite for writing on surfaces like glass, plastic, or metal. In chemistry, wax pencils are often used to label glassware or mark samples for identification in experiments. The wax markings can then be easily wiped off with a cloth or lab wipe after use.