transition metals		a column on the periodic table; also called "family"
ionic bond		covalently bonded compound that contains carbon
bond length		attractive force that holds chemicals together
biochemical compound		ion with a positive charge
amino acid		biological polymer of bonded amino acids
alkali metals		average distance between nuclei of two bonded atoms
carbohydrate		large organic molecule made of many smaller units
neutron		bond formed by positively charged metal ions and electrons around them
noble gases		ion with a negative charge
anion		group 17
electron		simplest chemical formula of a compound
alkaline earth metals		group 18
period		one of 20 naturally occuring compounds that combine to form proteins
bond angle		same atomic number, different mass
isotope		organic compound made of carbon, hydrogen, and oxygen
mole		angle formed by two bonds to the same atom
covalent bond		ion made of two or more covalently bonded atoms
polyatomic ion		group 1
protein		in the nucleus; positive charge
proton		a row on the periodic table
organic compound		in the nucleus; no charge
cation		chemical formula that gives the actual numbers of atoms in one molecule
halogens		the mass of one mole of a substance
chemical bond		the counting unit of chemistry
group		bond formed by the attraction of opposite charges
metallic bond		arrangement of bonded atoms or ions
empirical formula		organic compound that has important role in living things
molecular formula		bond formed when electrons are shared
chemical structure		group 2
polymer		outside the nucleus; negative charge
molar mass		groups 3 through 12