| A | B |
|---|
| Chemical formula | tells what elements make up a compound and the ratios of the atoms of those elements |
| subscript | a number in a chemical formula written after a chemical symbol that tells how many atoms of an element are in a unit of a compound |
| chemical bond | a condition in which a force holds together the atoms in a substance |
| chemically stable | a condition of an atom when its outer energy level is completely filled with electrons |
| an atom that has an electrical charge | ion |
| molecule that has oppositely charged ends | polar molecule |
| molecule that does not have oppositely charged ends | nonpolar molecule |
| ionic bond | force of attraction between the opposite charges of the ions in an ionic compound |
| covalent bond | bond that forms between atoms when they share electrons |
| The copound NaCl is an example of | ionic compound |
| at room temperature most covalent compounds are | liquids or gases |
| prefix meaning six | hexa- |
| prefix meaning many | poly- |
| prefix meaning two | bi- |
| compound composed of two elements | binary |
| compound that has water chemically attached to its ions | hydrate |
| without water | anhydrous |
| poisonous | toxic compounds are |
