| A | B |
|---|
| evaporation | the change of state from liquid to gas at the surface of a liquid |
| condensation | the change of state from a gas to a liquid |
| solvent | a substance that dissolves other materials |
| solute | a substance that is dissolved |
| dilute | describes a solution with a small amount of solute compared to the amount of solvent |
| concentrated | describes a solution with a large amount of solute compared to the amount of solvent |
| reactant | a substance that undergoes a chemical reaction, often by combining with another substance |
| product | a substance that is formed in a chemical reaction |
| exothermic reaction | a chemical reaction in which more energy is given off than is taken in |
| endothermic reaction | a chemical reaction in which more energy is taken in than is given off |
| formula | arrangement of symbols that shows both the kinds and number of atoms in a compound |
| chemical equation | an arrangement of symbols and formulas used to show what happens during a chemical reaction |
| acid | a compound that releases hydrogen ions in water |
| base | a compound that releases hydroxide ions when dissolved in water |
| pH scale | a set of numbers between 0 and 14 used to measure the strength of acids and bases |
| indicator | a substance that changes color at a certain range of pH values |
| neutralization | a process in which an acid and a base react to produce a salt and water |
