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Elements & Compounds

review of basic matter related vocabulary

matter the stuff that all objects and substances in the universe are made of
volume the space matter occupies (takes up)
mass a measure of the amount of matter in a given object
properties characteristics that help us identify or classify matter
density the amount of matter in a given space
ductility the ability to be pulled into a thin strand, like wire
malleablility the ability to be pressed or pounded into a thin sheet,like aluminum foil
boiling point the temperature at which a substance changes from a liquid into a gas
melting point the temperature at which a substance changes from a solid into a liquid
conductivity how well a substance allows heat or electricity to flow through it
element different kinds of atoms; simplest form of matter
compounds two or more elements that are combined to make a new substance with new properties
molecule two or more combined atoms that are the smallest particle of a substance that keeps the properties of the substance
reactants substances that change during a reaction (what you start with)
products substances that are a result of a reaction (what you end up with)
mixture a combination of two or more substances that have not combined chemically
pure substance only one substance: can be either an element or compound
metal element on the right of the periodic table; good conductors, high density, shiny, malleable, ductile
non-metal element on the left of the periodic table; poor conductors, dull, brittle
metalloid found on the stair step of the periodic table; properties of both metals and non-metals; semi-conductors
brittle breaks easily
luster how well a substance reflects light; shiny means lots of reflection; dull means little reflection
Created by: bwilliamsscience