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tournament chem.

1st 9 wks

isotopes of an element have a different mass number
a neutron oxygen atom differs from an oxide ion that the atom has fewer electrons
what is the total # of neutrons in an atom of K, whose mass is 39 and atomic # is 19 20
the amount of lithium chloride that the formula LiCL represents is one molecule
the mass number of an atom is =n to the total # of its protons and neutrons
the number of protons in an atom of Cl-36 is 17
when a chlorine atom reacts w/a sodium atom to form an ion, the chlorine atom will gain one electron
as a substance changes from a liquid to a gas, the avg. distance between molecules increases
the nucleus of a fluorine atom has a charge of 9+
Created by: msbriee