Chapter 2
About this set
Created by:
MorganBroyles on March 12, 2012
Log in to favorite or report as inappropriate.
Order by
29 terms
Terms | Definitions |
|---|---|
 atom | the smallest basic unit of matter |
| element | one particular type of atom that cannot be broken down into a simpler substance by ordinary chemical means |
| compound | a substance made of atoms of different elements bonded together in a certain ratio |
| ion | an atom that has gained or lost one of more electrons |
| ionic bond | chemical bond formed through the electrical force between oppositely charged ions |
| covalent bond | chemical bond formed when two atoms share one or more electrons |
| hydrogen bond | an attraction between a slightly positive hydrogen atom and a slightly negative atom, often oxygen or nitrogen |
| cohesion | the attraction among molecules of a substance |
| adhesion | the attraction among molecules of different substances |
| solution | a mixture of substances that is the same through-out; a homogeneous mixture |
| solvent | the substance that is present in the greater amount of a solution and dissolves into another substance |
| solute | a substance that dissolves into another substance |
| pH | measurement of acidity; related to free hydrogen ion concentration in solution |
| monomer | molecular subunit of a polymer |
| polymer | a large molecule, or macromolecule, made ofmany monomers bonded together |
| carbohydrates | molecules composed of carbon, hydrogen, and oxygen; includes sugars and starches |
| lipids | nonpolar molecules that include fats, oils, and cholesterol |
| fatty acids | chains of carbom atoms bonded to hydrogen atoms |
| protein | a polymer made of monomers called amino acids |
| amino acids | molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur |
| nucleic acids | polymers that are made up of monomers called nucleotides |
| reactants | the substances changed during a chemical reaction |
| products | the substances made by a chemical reaction |
| bond energy | the amount of energy that will break a bond between two atoms |
| equilibrium | condition in which reactants and products of a chemical reaction are formed at the same rate |
| activation energy | the amount of energy that needs to be absorbed for a chemical reaction to take place |
| exothermic | chemical reaction that yields a net release of energy in the form of heat |
| endothermic | chemical reaction that requires a net input of energy |
| enzymes | catalysts for chemical reactions in living things |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.