| Term | Definition |
|---|
| chemical bond | the attractive force that holds atoms or ions together |
| chemical structure | the arrangement of bonded atoms or ions within a substance |
| bond length | the average distance between the nuclei of two bonded ations |
| bond angle | the angle formed by two bonds to the same atom |
| ionic bond | a bond formed by the attraction between oppositely charged ions |
| metallic bond | a bond formed by the attraction betweern positively charged metal ions and the electrons around them |
| covalent bond | a bond formed when atoms share one or more pairs of electrons |
| polyatomic ion | an ion made of two or more atoms that are covalently bonded and that act like a single ion |
| empirical formula | the simplest chemical formula of a compound that tells the smalles whole number ration of atoms in the compound |
| molecular formula | a chemical formula that reports the actual number of atoms in one molecule of a compound |
| organic compound | any covalently bonded compound that contains carbon |
| polymer | a large organic molecuole made of many smaller bonded units |
| biochemical compound | any organic compound that has important role in living things |
| carbohydrate | any organic compound that is made of carbon, hydrogen, and oxygen ant that provides nutrients to the cells of living things |
| protein | a biologicial polyer made of bonded amino acids |
| amino acids | any one of 20 organic molecules that combint to form proteins |
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