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Ch. 5 Investigating Matter

AB
physical propertya property that can be observed without changing what a substance is made of
physical changea change in a substance's appearance but not in what it is made of
chemical propertya property that describes how a substance reacts with other substances
chemical changea change that forms new substances with new properties
elementone of the 109 basic substances of matter
nucleusthe central part of an atom
electrona negatively charged atomic particle
neutrona particle with no charge found in the nucleus of an atom
protona positively charged particle in the nucleus of an atom
conductora material that transmits heat or electricity
periodic tablearrangement of all known elements in a chart in order of the number of protons each element has
formulaa way to write the kinds and numbers of atoms in a molecule or compound
symbolone or two letters that stand for the name of an element
solutiona mixture of molecules made by dissolving one substance in another substance
solventa substance that dissolves a solute
solutea substance that dissolves another substance
dilutecontaining a small amount of solute
concentratedcontaining a large amount of solute
suspensiona mixture in which patricles of a substance are scattered in another substance but not dissolved


Jennie Dean Elementary School
Manassas, VA

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