Class Notes Chemistry: Matter and Density

More Ways to classify matter
pure substance
-

a substance with a constant composition
↳ no
impunities Lex ,
distilled water)



elements -

substances that cannot be broken down into any other substances by chemical

methods
↳ all elements have of that
a get properties are


unique to each element

↳ the periodic table
anything listed on




compounds be
·



combinations of elements that can
-




broken down by chemical methods



homogeneous mixture
-
mixture were the composition is

the same throughout
↳
also known as a solution (ex .
salt water)

heterogeneous
·


mixture mixtures were the composition is different throughout
-




all (ex cookie it
regions .