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science

chapter fifteen vocab

TermDefinition
substance type of matter with fixxed composition
element when all the atoms in a substance have the same identity
compound substance in which the atoms of two or more elements are combined in a fixed proportion
heterogeneous mixture a mixture in which you can distinguish different materials easily
homo geneous mixture a mixture in which you can not distinguish different materials and is most time made up of gas liquid or solid
solution homogeneous mix of particles so small that they cannot be seen with microscope and wil never settle to the bottom of the container
colloid type of mixture with particles that are larger than those in solutions but not heavy enough to settle out
tyndall effect the scattering of light by colloid particles
suspention hetrogeneous mix containing liquid in which visible particles settle
physical property any characteristics of a material that you can observe without changing the identity of the substances that make up the material
physical change a change in size, shape or state of matter
distillation evaporating a liquid and recondensing its vapor
chemical property characteristics of a substance that indicate whether it can undergo a certain chemical change
chemical change the change from one substance to another
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: kerby47