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Sci 15
Term | Definition |
---|---|
chemical change | change of one substance into another |
chemical property | any characteristic of a substance, such as flammability, that indicates whether it can undergo a certain chemical change |
colloid | heterogeneous mixture whose particles never settle |
distillation | process that can separate two substances in a mixture by evaporating a liquid and recondensing its vapor |
element | substance with atoms that all alike |
heterogeneous mixture | mixture, such as mixed nuts or a dry soup mix, in witch different materials are unevenly distributed and are easily identified |
homogeneous mixture | solid, liquid, or gas that contains 2 or more substances blended evenly throughout |
law of conservation of mass | states that the mass of all substances present before a chemical change equals the mas of all the substances remaining after the change |
physical change | any change in size, shape, or state of matter in which the identity of the substance remains the same |
physical property | any characteristic of a materiel, such as size or shape, that you can observe or attempt to observe without changing the identity of the materiel |
solution | homogeneous mixture that remains constantly and uniformly mixed and has particles that are so small they cannot be seen with a microscope |
substance | element or compound that can't be broken down into simpler components and maintain the properties of the original substance |
suspension | heterogeneous mixture containing a liquid in which visible particles settle |
tyndall effect | scattering of a light beam as it passes through a colloid |