Mr. Ide's AP Biology study group for the 2011-2012 school year.
380617293 | A substance that increases the hydrogen ion concentration of a solution. | Acid | |
380617294 | A substance that reduces the hydrogen ion concentration of a solution. | Base | |
380617295 | 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. | Buffer | |
380617296 | 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. The Calorie (with a capital C), usually used to indicate the energy content of food, is a kilocalorie. | Calorie (cal) | |
380617297 | 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. | Celsius scale | |
380617298 | The linking together of like molecules, often by hydrogen bonds. | Cohesion | |
380617299 | A mixture made up of a liquid and particles that (because of their large size) remain suspended rather than dissolved in that liquid. | Colloid | |
380617300 | 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. | Evaporative cooling | |
380617301 | The total amount of kinetic energy due to the random motion of atoms or molecules in a body of matter; also called thermal energy. Heat is energy in its most random form. | Heat | |
380617302 | A unit of energy: 1 J = 0.239 cal; 1 cal = 4.184 J. | Joule (J) | |
380617303 | The energy associated with the relative motion of objects. Moving matter can perform work by imparting motion to other matter. | Kinetic energy | |
380617304 | A common measure of solute concentration, referring to the number of moles of solute per liter of solution. | Molarity | |
380617305 | The number of grams of a substance that equals its molecular weight in daltons and contains Avogadro's number of molecules. | Mole (mol) | |
380617306 | The sum of the masses of all the atoms in a molecule; sometimes called molecular weight. | Molecular mass | |
380617307 | Decreasing pH of ocean waters due to absorption of excess atmospheric CO2 from the burning of fossil fuels. | Ocean acidification | |
380617308 | 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. | Polar covalent bond | |
380617309 | A substance that is dissolved in a solution. | Solute | |
380617310 | A liquid that is a homogeneous mixture of two or more substances. | Solution | |
380617311 | The dissolving agent of a solution. Water is the most versatile solvent known. | Solvent | |
380617312 | The amount of heat that must be absorbed or lost for 1 g of a substance to change its temperature by 1°C. | Specific heat | |
380617313 | 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. | Surface tension | |
380617314 | A measure of the intensity of heat in degrees, reflecting the average kinetic energy of the molecules. | Temperature |