Salt, sugar, baking soda, etc. Some also consider honey, tap water, and vegetable oil as pure substances.
Alchemists advanced the tools and procedures for working with chemicals. Alchemists also developed methods for sorting out mixtures and cleansing chemicals. They designed equipment that is still in use today including beakers, flasks, tongs, funnels, and the mortar and pestle. Also, Alchemists backed to an unbelievable variety of what would later be acquainted as chemical industries: basic metallurgy, metalworking, the invention of inks, dyes, paints, and cosmetics, leather-tanning, and the preparation of extracts and liquors.
<span>the movement of the liquid in a thermometer is related to the motion of the molecules of the liquid when they are heated</span>
