3.An atom that has gained or lost electrons is called a(n)____- .
4.An atom is ____ when its outer energy level is filled with electrons.
5.A(n) ________ tells what elements make up a compound and the ratios of the atoms of those elements.
6.A molecule that has a positive end and a negative end is a(n) _________ molecule.
7.A bond that forms between atoms when they share electrons is a(n) _______ bond.
Answer:
3) ion
4) unreactive
5)law of multiple proportion given by john Dalton
6) ionic molecule
5) Covelent