Sand, Salt, and Iron Cabinet #10     Thermometers Thermometers  Thermometers are typical chemistry equipment used to identify how hot a substance is.  Most thermometers in a chemistry lab use the Celsius scale that is based on the freezing and boiling points of water.  Because thermometers are round, they can roll off of lab tables.  Test Tubes Racks Test tubes and racks  Test tubes are exactly what the name implies: tubes used from tests.  Most often glass, test tubes can be heated if necessary or it can be set in a test tube rack to react over long periods of time.  Test tubes are not graduated and are not effective devices for conducting experiments requiring large amounts of reactants.   Sand, Salt, and Iron Home Sand, Salt, and Iron Info Equipment Page Evaluation Page Dustan's Homepage