AP Bio vocab words.
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| 1628186369 | Polar molecule | A molecule with opposite charges on opposite sides. | 0 | |
| 1628186370 | Cohesion | The binding together of like molecules, often by hydrogen bonds. | 1 | |
| 1628186371 | Adhesion | The attraction between different kinds of molecules. | 2 | |
| 1628186372 | Surface tension | A measure of how difficult it is to stretch or break the surface of a liquid. It is high in water because of hydrogen bonding. | 3 | |
| 1628186373 | Kinetic energy | The energy of motion, which is directly related to the speed of that motion. | 4 | |
| 1628186374 | Heat | The total amount of kinetic energy due to molecular motion in a body of matter. It is energy in its most random form. | 5 | |
| 1628186375 | Temperature | A measure of the intensity of heat in degrees, reflecting the average kinetic energy of the molecules. | 6 | |
| 1628186376 | Celsius scale | A temperature scale (*C) equal to 5/9 (*F-32) that measures the freezing point of water at 0*C and the boiling point of water at 100*C. | 7 | |
| 1628186377 | 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. | 8 | |
| 1628186378 | Kilocalorie | 1000 calories; the amount of heat energy required to raise the temperature of 1kg of water by 1*C. | 9 | |
| 1628186379 | Joule | A unit of energy = 0.239 calories | 10 | |
| 1628186380 | 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. | 11 | |
| 1628186381 | 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. | 12 | |
| 1628186382 | Evaporative cooling | The property of a liquid whereby the surface becomes cooler during evaporation, owing to a loss of highly kinetic molecules to the gaseous state. | 13 | |
| 1628186383 | Solution | A liquid that is a homogeneous mixture of two or more substances. | 14 | |
| 1628186384 | Solvent | The dissolving agent of a solution. Water is the most versatile of these. | 15 | |
| 1628186385 | Solute | A substance that is dissolved in a solution. | 16 | |
| 1628186386 | Aqueous solution | A solution in which water is the solvent. | 17 | |
| 1628186387 | Hydration shell | The sphere of water molecules around each dissolved ion. | 18 | |
| 1628186388 | Hydrophilic | Having an affinity for water. | 19 | |
| 1628186389 | Colloid | A mixture made up of a liquid and fine particles that remain suspended in that liquid. | 20 | |
| 1628186390 | Hydrophobic | Having an aversion to water; tending to coalesce and form droplets in water. | 21 | |
| 1628186391 | Molecular mass | The sum of the masses of all the atoms in a molecule; sometimes called molecular weight. | 22 | |
| 1628186392 | Mole | The number of grams of a substance that equals its molecular weight in daltons and contains Avogadro's number of molecules. | 23 | |
| 1628186393 | Molarity | A common measure of solute concentration, referring to the number of moles of solute per liter of solution. | 24 | |
| 1628186394 | Hydrogen ion | A single proton with a charge of 1+. The dissociation of a water molecule leads to the generation of a OH- ion and a H+ ion. | 25 | |
| 1628186395 | Hydroxide ion | A water molecule that has lost a proton, OH-. | 26 | |
| 1628186396 | Acid | A substance that increases the hydrogen ion concentration of a solution. | 27 | |
| 1628186397 | Base | A substance that reduces the hydrogen ion concentration of a solution. | 28 | |
| 1628186398 | pH | A measure of hydrogen ion concentration equal to -log[H+] and ranging in value from 0 to 14. | 29 | |
| 1628186399 | Buffer | A substance that consists of acid and base forms in a solution and that minimizes changes in pH when extraneous acids or bases are added to the solution. | 30 | |
| 1628186400 | Acid precipitation | Rain, snow, or fog that is more acidic than pH 5.6. | 31 |
