The negatively charged particles of atoms; found outside the nucleus.

Particles of atoms that have no charge; located in the nucleus.

Central region of atoms; contains the protons and neutrons.

The positively charged particles of atoms; found in the nucleus.

A pure substance formed when two or more different elements combine.

A chemical bond that forms when electrons are shared.

A pure substance that cannot be broken down into other substances by physical or chemical means.

An atom that has lost or gained one or more electrons and carries an electric charge.

An electrical attraction between two oppositely charged atoms or groups of atoms.

Atoms of the same element that have different numbers of neutrons in the nucleus.

A compound in which the atoms are held together by covalent bonds.

The minimum amount of energy needed for reactants to form products in a chemical reaction.

The specific location where a substance binds on an enzyme.

A substance that lowers the activation energy needed to start a chemical reaction.

The process by which atoms or groups of atoms in substances are reorganized into different substances.

Biological catalyst.

Substances formed during a chemical reaction.

The starting substances in a chemical reaction.

The reactants that bind to the enzyme.

Substances that release hydrogen ions when dissolved in water.

Substances that release hydroxide ions when dissolved in water.

Mixtures that react with acids and bases to keep the pH within a particular range.

A weak interaction involving a hydrogen atom and a fluorine, oxygen, or nitrogen atom from a different molecule.

A combination of two or more substances in which each substance retains its individual characteristics and properties.

A measure of the concentration of hydrogen ions in a solution.

Molecules that have an unequal distribution of charges.

The substance that is dissolved in the solvent.

Another name for a homogeneous mixture; has a uniform composition throughout.

Substance in which another substance is dissolved.

Weak electrostatic attractions between molecules

Building blocks of proteins.

Macromolecules that are composed of C, H, O in a 1:2:1 ratio. Energy source and form many structures.

Macromolecules composed mainly of C, and H. Make up waxes, fats, and oils.

Large molecules that are formed by joining smaller organic molecules together.

Complex macromolecules that store and transmit genetic information. Composed of C, H, O, N, P.

Small, repeating subunits of nucleic acids.

Molecules made from repeating units of identical or nearly identical components called monomers that are linked together by a series of covalent bonds.

Primary building block of living things. Composed of amino acids made up of C, H, O, N, S.

The study of organic compounds.

Organic compounds are _________-based.

Carbohydrates with an n value of 3-7.

Carbohydrate that is two monosaccharides joined together.

Large carbohydrate molecule composed of many monosaccharides joined together.

CO is an atom.

During an exothermic reaction energy is ______.

During an endothermic reaction energy is________.

Enzymes are composed of ________.

Solutions which have a uniform composition throughout are ________ mixtures.

Suspensions, mixtures in which the components remain distinct, are __________.