VOICEOVER: Pure and impure substances. The word pure in everyday life doesn't have the same meaning in science. For example, pure orange juice is a mixture of compounds and bottled water still has ...
Found in air. Used to treat breathing problems A compound is a substance that contains atoms of two or more different elements, chemically joined together. For example, water is a compound of ...
Public health officials warn about rare and dangerous substance discovered in eastern North Carolina
A rare and dangerous substance has been discovered in eastern North Carolina for the first time. Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, or BTMPS, is a chemical with industrial uses like a ...
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