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Phy Sci Ch 5

Structure of Matter

TermDefinition
Chemical bond The attractive force that holds atoms or ions together.
Chemical structure The arrangement of atoms in a substance.
Bond length The average distance between the nuclei of two bonded angles.
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 between positively charged metal ions and the electrons around them.
Covalent bond A bond formed when atoms share one or more pair of electrons
Polyatomic ion An ion made of two or more atoms.
Empirical formula The composition of a compound in terms of the relative numbers and kinds of atoms in the simplest ratio.
Molecular formula A chemical formula that shows the number and kinds of atoms in a molecule, but not the arrangement of atoms.
Organic compound A covalently bonded compound that contains carbon, excluding carbonates and oxides.
Polymer A large molecule that is formed by more than five monomers, or small units.
Protein An organic compound that is made of one or more chains of amino acids and that is a principal component of all cells.
Amino acid Any one of twenty different organic molecules that contain a carboxyl and an amino group and that combine to form proteins.
Carbohydrate Any organic compound that is made of carbon, hydrogen, and oxygen and that provides nutrients to the cells of living things.
Created by: cormicanr
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