| A | B |
|---|
| activation energy | amount of energy for a chemical reaction to start and to contiune on its own |
| catalyst | chemical that reduces the amount of activation energy needed for a reaction but not a reactant |
| endergonic reaction | chemical reaction involves a net gain of free energy |
| energy | ability to do work or cause change |
| enzyme | a catalyst usually a protein |
| exergonic reaction | chemical reaction involves a net release of free energy |
| free energy | energy in a system available for work |
| product | compound formed by a chemical reaction |
| reactant | compound or atom involved in a chemical reaction |
| state | solid,liquid, or gas detemined by the rate which atoms or molecules move |
| acid | substance that increases the H+ concentration when added to water |
| alkaline | base |
| aqueous solution | solution in which water is the solvent |
| base | substance that increases OH+ concentration when added to water |
| buffer | chemical reactions that neutralize small amounts of acids or bases added to a solution |
| concentration | measurement of the amount of solute dissolved in a fixed amount of a solvent |
| dissociation | separating a molecule into simpler molecules, atoms, radicals or ions |
| hydronium ion | H3O+ |
| hydroxide ion | OH- |
| pH scale | numeric range that quantifies the relative concentration of hydronium ions and hydroxide ions in a solution |
| saturated solution | solution inwhich no more solute can dissolve |
| solute | substance dissolved in a solution |
| solution | mixture in which one or more substances are niformly dissolved in another substance |
| solvent | in a solution the substance in which a solute is dissolved |
