Chapter+4+Vocabulary

** Density **  — the ratio of mass to volume of a substance ** Element **  — a substance that is composed of one type of atom - An element cannot be chemically separated ** Emulsion **  — a dispersion of tiny particles of one liquid in another liquid: Example: oil — and — vinegar salad dressing ** Gas **  — a physical state in which a substance has no definite volume or shape - A gas will fill a container of any shape ** Liquid **  — a physical state in which a substance has definite volume, but no definite shape - A liquid will flow into a container and can be changed into a solid by cooling and into a gas by heating ** Matter **  — the stuff of what substances are made ** Mixture **  — a combination of substances in which each substance retains its own chemical and physical properties ** Property **  — a characteristic of a substance that can be observed, such as color, taste, texture, and density <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt;">** Product ** <span style="color: black; font-family: 'Verdana','sans-serif'; font-size: 10pt;"> — in a chemical reaction, a substance that is formed as a result of the reaction <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt;">** Reactants ** <span style="color: black; font-family: 'Verdana','sans-serif'; font-size: 10pt;"> — the substances that combine in a chemical reaction <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt;">** Solid ** <span style="color: black; font-family: 'Verdana','sans-serif'; font-size: 10pt;"> — a physical state in which a substance has both volume and shape, with molecules held tightly together. A solid can be changed into a liquid by heating <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt; mso-ansi-language: EN-US;">** Solution ** <span style="color: black; font-family: 'Verdana','sans-serif'; font-size: 10pt; mso-ansi-language: EN-US;"> — a mixture in which the atoms or molecules dissolve, or become evenly dispersed and the same size <span style="font-family: 'Verdana','sans-serif'; font-size: 10pt;">** Volume ** <span style="color: black; font-family: 'Verdana','sans-serif'; font-size: 10pt;"> — the amount of space taken up by matter
 * __ Science Chemistry - Vocabulary  __**