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Law of Conservation of Mass the mass is neither created nor destroyed during ordinary chemical reactions or physical changes
Law of Definite Proportions chemical compounds contain the same elements in exactly the same proportions y mass regardless of the size of the sample source of the compound
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 is always a ratio of the small whole number
atom the smallest particle of an element that retains the chemical property of that element
nuclear forces short-range proton-neutron, proton-proton, and neutron-neutron forces that hold nuclear particles together
atomic number number of protons of each atom in an element
isotope atoms of the same element with different masses
mass number total number of protons and neutrons in an isotope
nuclide specific isotope of an atom
atomic mass unit amu or 1/12 of a carbon atom
average atomic mass weighted average of naturally occurring isotopes of an element
Avogadro's number 6.02*10^23
molar mass mass of one mole of a pure substance
Created by: pepperjakob