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Chap. 15

Vocab.

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