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final 1

TermDefinition
matter anything that has mass and takes up space
element substance that can't be broken down by chemical or physical means
atom smallest particle of element
molecule particle made up of 2 or more atoms
compound substance made of 2 or more elements
mixture 2 or more substances that are mixed but not chemically combined
electron negatively charged particles
proton positively charged particles
neutron nuetrally charged particle
nucleus center core of an atom
valence electron number of electrons in valence shell
chemical bond attraction that holds 2 atoms together
chemical symbol used to identify an element
atomic number number of protons in nucleus of an atom
period elements in same horizontal row of PT
Group/Family elements in same column of PT
ion atoms that have become electrically charged
ionic bonds attraction between oppositely charged ions
chemical formula combo of symbols that represents elements in a compound
subscript number in chemical formula that tells the number of atoms in a molecule or a ratio of elements in a compound
covalent bond chemical bond formed when 2 atoms share electrons
polar bond covalent bond in which electrons are shared unequally
alloy a material that is made up of 2 or more elements and has the properties of a metal
ductile term used to describe a metal that can be pulled into a wire
malleable term used to described a material that can be hammered or rolled into shape
physical property characteristic of a substance that can be observed without changing it into another substance
chemical property characteristic that describes its ability to change
physical change alters form or appearance
chemical reactions process in which substances undergo changes that result in formation of a new substance
endothermic reaction absorbs energy in the form of heat
exothermic reaction releases energy in the form of heat
chemical equation easy way to show a chemical reaction
reactant a substance that enters into a chemical reaction
product substance formed as a result as a result of a chemical reaction
conservation of mass matter can't be created or destroyed
synthesis chemical reaction when 2 or more simple substances form a new complex substance
decomposition chemical reaction that breaks down compounds
replacement reaction in which 1 substance replaces another
activation energy minimum amount of energy needed to start a chemical reaction.
concetration the amount of 1 material in a certain value of another material
catalyst material that increases the rate of a reaction
inhibitor decreases the rate of a reaction
solution well mixed mixture containing a solute and at least 1 solvent
dilute solution only a little solute dissolved in it
enzyme bio catalyst that lowers activation energy
solvent dissolves solute
solute dissolved by solvent
suspension seen and easily separated mixture
Created by: someguy26