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Classifying Matter

Foundations of Chemistry

TermDefinition
matter anything that has mass and takes up space
atom the smallest part of an element or chemical; building block of matter
nucleus positively-charged central core of an atom
proton stable atomic particles with positive charge
neutron subatomic particles with no electric charge
electron negatively charged atomic particles that move quickly around an atom's nucleus
substance matter with a composition that is always the same
element a substance that consists of just one type of atom
compound type of substance containing atoms of two or more different elements chemically bonded together
periodic table table illustrating the chemical elements
chemical formula a combination of symbols and numbers that represent a compound
mixture combinations of two or more substances that are physically blended together
homogeneous mixture type of mixture in which the individual substances are evenly mixed
heterogeneous mixture type of mixture in which the individual substances are not evenly mixed
solvent component of a mixture in which solutes dissolve
dissolve form a solution by mixing evenly
solute the substance dissolved into another substance
physical property a characteristic of matter that can be observed or measured without changing the identity of the matter
mass the amount of matter in an object
states of matter solid, liquid, gas
density mass per unit volume - D = M/V
solubility ability of a substance to dissolve
chemical property characteristic of matter observed as it changes to a different type of matter
chemical change change in matter in which substances change into other substances with new physical and chemical properties
concentration amount of substance in a certain volume
physical change a change in size, shape, form, or state of matter in which the matter's identity stays the same
Created by: lindakelly
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