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Classification of

Classification of matter

Tyndall Effect The scattering of light by colloidal particles.
pure substance A type of matter with fixed composition.
element All atoms have the same identity.
compound A substance in which the atoms of two or more elements are combined chemically in a fixed proportion.
chemical combination Elements combine to form a brand new material
mixture A physical combination of two or more pure substances whose composition may vary.
physical combination Combined materials do not change their identity
heterogeneous mixture The materials are not mixed in the same ratio throughout.
homogeneous mixture Materials are mixed in the same ratio throughout.
solution A homogeneous mixture where the particles never settle out.
colloid A heterogeneous mixture where the particles never settle out.
suspension A heterogeneous mixtures where particles will settle out and separate.
property A characteristic or behavior used to describe a material.
physical property A characteristic that you can observe or measure without changing the identity of the substance.
chemical property A property that is observed because the identity of the substance will change.
physical change A change where there is no change in the material's identity.
chemical change A change where a substance changes its identity.
Two examples of elements carbon, hydrogen
Two examples of a compound table salt, water
Two examples of heterogeneous mixtures pizza, lucky charms cereal
Two examples of homogeneous mixtures koolaid, salt water
Two examples of a solution air, vinegar
Two examples of a suspension Italian dressing, pond water
Two examples of physical properties color, shape
Two examples of chemical properties flammable, sensitive to light
Two examples of physical change cutting, crushing
Two examples of chemical change rusting, spoiling
Distillation The process used for separating substances in a mixture by evaporating a liquid and recondensing its vapor.
Law of conservation of mass the mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change.
Created by: lesterstoffels