Metals - Elements have luster, contain less than 4 electrons in the outermost energy level, Mercury - The only Metals that exit in a liquid state, Nonmetals - Elements may be solid.gas and liquids having no luster, Bromine - The only non metals That exit in liquid state, Carbon or graphite - The only non metals that conduct electricity, positive ion - An atom that lost electrons or more during chemical reaction, Negative ion - An atom that gain electrons or more during chemical reaction, Nobel gas - An atom of elements that neither loses nor gains any electrons, Ionic bond - A bond resulting from electric attraction between a positive ion and a negative ion, Covalent bond - A bond that is formed between two nonmetals with sharing electrons,

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