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what is a isotopes? atoms of the same element w/ diff mass due to # of neutrons.
What is the atomic theory ? used to atom to describe the smallest and fundamental building block of all matter. 450 Democritus
What were the laws of chemistry? laws r descriptions of reproducible natural phenomenon. can be mathematical formulas or descriptions using words they describe but do not give a reason/explanation
is there a change in mass during a chemical reaction? no, mass is neither destroyed nor created during normal chemical reactions.
What is the law of definite proportions ? A chemical compund contains the sme element in xactly the same elements all pure compounds have a definite combination of atoms of different elements:they have a specific chemical formula
law of multiple proportions? if two or more different compounds are composed of the same two elements then the ratio of the masses of the second element combined with a certain mass of the first element element is a certain ratio of small whole numbers
daltons atomic theory all matter is composed of tiny fundametal particals called atoms all atoms of a given element are identical in size,mass physical and chemical properties(was later changed) atoms of different elements differ from one another
Created by: jadej127