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Chapter 15

vocabulary

TermDefinition
substance is a type of matter with fixed composition
element if all the atoms in a substance have the same identity
compound is a substance formed from two or more elements
heterogeneous mixture technique that produces a complete three dimensional photographic image of an object.
homogeneous mixture solid, liquid, or gas that contains two or more substances blended evenly throughout.
solution homogeneous mixture that remains constantly and uniformedly mixed and has particles that are so small they cannot be seen with microscope.
colloid heterogeneous mixture whose particles nece settle
Tyndall effect scattering of a light beam as it passes through a colloid.
suspendsion contains a liquid in which visible particles settle.
Physical property an characteristics 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 than can separate two substance in a mixture by evaporating a liquid and recondensing its vapor
chemical property any characteristic of a substance, such a flammability, that indicates whether it can indergo a certain chemical change.
chemical change change of one substance into a new substance
Law of Conservation of Mass state that the mass of all substances present before a chemical change equals the ass of all the substance remaining after the change.
Created by: yadi1998
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