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Chemical Bonding
Unit 2-Chemical Bonding
Term | Definition |
---|---|
anion | negative ion; formed when an atom gains electrons |
cation | positive ion; formed when an atom loses electrons |
chemical bond | combining of atoms of elements to form new substances |
chemical formula | combination of chemical symbols usually used to represent a compound |
covalent bond | chemical bond in which electrons are shared rather than transferred; occurs between two nonmetals |
ion | charged particle formed when an atoms gains or loses electrons |
ionic bond | chemical bond that involves the transfer of electrons; occurs between a metal and nonmetal |
molecule | combination of atoms formed by a covalent bond |
neutral | overall charge of zero |
charge | number of electrons an atom gains, loses, or shares when it forms chemical bonds |
subscript | small number placed to the lower right of a chemical symbol that gives the number of atoms of the element in the compound |