unit 3 test
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what are the elements
anpure substance that cannot be broken down into similar substinces
what are chemical symbols
lettser used to represet each element
what are compounds
a substance consiting of molucles that contain more than one kind of atom
what is a chemical formula
a group of letters and numbers that represent a molecule of a compound
what is a periodic table
a table that orginizes the chemical elemnts
what are physical changes
a change that alters the form of apperance of matter but dose not form any new substance
what is an aqueous soulution
a type of homogenous micture in witch molecules of a nother substance are uniforme mixed with water
what are chemical changes
a chnage that resultes in the formTion of one or more new substances
what is a solute
the part of a soultion dissolved by the solvent
what is solevent
the part of a soulution that desolves outher substances
what is a concentration
how much of the soulte is dissolved in a given amout of the solvent in a soulution
what is dilutiont
the decresei g of the concentration of a soulution
what is the rate of dissolution
speed at witch a solute dissoves in a solvent
elements