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| 10411845677 | Acid | A substance that increases the hydrogen ion concentration of a solution. | 0 | |
| 10411845998 | Adhesion | The clinging of one substance to another, such as water to plant cell walls by means of hydrogen bonds. | 1 | |
| 10411846648 | Aqueous Solution | A solution in which water is the solvent. | 2 | |
| 10411846649 | Base | A substance that reduces the hydrogen ion concentration of a solution. | 3 | |
| 10411847206 | Buffers | A solution that contains a weak acid and its corresponding base. A buffer minimizes changes in pH when acids or bases are added to the solution. | 4 | |
| 10411848240 | Calorie | The amount of heat energy required to raise the temperature of 1 g of water by 1°C; also the amount of heat energy that 1 g of water releases when it cools by 1°C. | 5 | |
| 10411848533 | Cohesion | The linking together of like molecules, often by hydrogen bonds. | 6 | |
| 10411849416 | Evaporative Cooling | The process in which the surface of an object becomes cooler during evaporation, a result of the molecules with the greatest kinetic energy changing from the liquid to the gaseous state. | 7 | |
| 10411849675 | Heat | Thermal energy in transfer from one body of matter to another. | 8 | |
| 10411851309 | Heat of Vaporization | The quantity of heat a liquid must absorb for 1 g of it to be converted from the liquid to the gaseous state. | 9 | |
| 10411851772 | Hydration Shell | The sphere of water molecules around a dissolved ion. | 10 | |
| 10411852530 | Hydrogen Ion | A single proton with a charge of 1+. | 11 | |
| 10411853408 | Hydronium Ion | A water molecule that has an extra proton bound to it; H3O+, commonly represented as H+ | 12 | |
| 10411853795 | Hydrophilic | Having an affinity for water. | 13 | |
| 10411854100 | Hydroxide Ion | A water molecule that has lost a proton; OH−. | 14 | |
| 10411854409 | Joule | A unit of energy. | 15 | |
| 10411854685 | Kilocalorie | A thousand calories; the amount of heat energy required to raise the temperature of 1 kg of water by 1°C. | 16 | |
| 10411855429 | Kinetic Energy | The energy associated with the relative motion of objects. Moving matter can perform work by imparting motion to other matter. | 17 | |
| 10411855890 | Molarity | A common measure of solute concentration, referring to the number of moles of solute per liter of solution. | 18 | |
| 10411855891 | Mole | The number of grams of a substance that equals its molecular or atomic mass in daltons. | 19 | |
| 10411857686 | Molecular Mass | The sum of the masses of all the atoms in a molecule; sometimes called molecular weight. | 20 | |
| 10411858906 | Ocean Acidification | Decreasing pH of ocean waters due to absorption of excess atmospheric CO2 from the burning of fossil fuels. | 21 | |
| 10411859495 | pH | A measure of hydrogen ion concentration equal to −log [H+] and ranging in value from 0 to 14. | 22 | |
| 10411859762 | Polar Covalent Bond | A covalent bond between atoms that differ in electronegativity. The shared electrons are pulled closer to the more electronegative atom, making it slightly negative and the other atom slightly positive. | 23 | |
| 10411859763 | Polar Molecule | A molecule (such as water) with an uneven distribution of charges in different regions of the molecule. | 24 | |
| 10411860827 | Solute | A substance that is dissolved in a solution. | 25 | |
| 10411871212 | Solution | A liquid that is a homogeneous mixture of two or more substances. | 26 | |
| 10411871430 | Solvent | The dissolving agent of a solution. Water is the most versatile solvent known. | 27 | |
| 10411872200 | Specific Heat | The amount of heat that must be absorbed or lost for 1 g of a substance to change its temperature by 1°C. | 28 | |
| 10411872623 | Surface Tension | A measure of how difficult it is to stretch or break the surface of a liquid. Water has a high surface tension because of the hydrogen bonding of surface molecules. | 29 | |
| 10411872979 | Temperature | A measure in degrees of the average kinetic energy (thermal energy) of the atoms and molecules in a body of matter. | 30 | |
| 10411873376 | Thermal Energy | Kinetic energy due to the random motion of atoms and molecules; energy in its most random form. | 31 | |
| 10411875040 | Triacylglycerol | A lipid consisting of three fatty acids linked to one glycerol molecule; also called a fat or triglyceride. | 32 |
