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Periodic table of elements
all the known elements into a chart according to their properties
Chemical symbol
1 or 2 letters used to represent the element’s name
atomic mass
the average mass of an atom of that element
atomic number
the number of protons in an atom of that element
period
each row of elements in the periodic table
group/family
each column of the periodic table
chemical formula
a shorthand way of describing a chemical compound
coefficient
the large #3 in front of the H
electron-dot diagrams
another way to represent molecules and compounds
chemical reaction
takes place when one or more substances change to form new ones
reactants
the substances that undergo the change
products
substances that result from this change
chemical equation
a way of describing a chemical reaction using chemical formulas
law of conservation of mass
matter can be neither created or destroyed
mixture
a combination of 2 or more substances that have not combined chemically
solution
a mixture that looks like a single substance and has the same properties throughout
suspension
when the components in a mixture dispersed but large enough to see and settle out
solute
the substance that does the dissolving
solvent
the substance that gets dissolved
solubility
the ability of a substance to dissolve in another
