| A | B |
|---|
| Analytical chemistry | the study of the composition of substances |
| biochemistry | the study of the composition and changes in composition of living organisms |
| chemical reaction | the changing of substances to other substances by the breaking of old bonds and the formation of new bonds |
| chemical symbol | a on eor two letter representation of an element |
| chemistry | the study of the structure, properties, and composition of substances, and the changes that substances undergo. |
| data | the observations that are recoreded during an experiment |
| distillation | a purification process in which a liquid is evaporated and the condensed sagain to a liquid; used to separate dissolved solids from liquids or liquids from liquids according to boiling point |
| energy | teh capacity for doing work; it exists in several forms, including chemical, electrical, radiant, mechanical, and thermal energies |
| experiement | a carefully controlled, repeatable procedure for gathering data to test a hypothesis |
| gas | matter that has no definite shape or volume; it adopts the shape and volume of its container |
| heat | the energy that is transferred from one body to another because of a temperature difference |
| hypothesis | a descriptive model used to explain observations |
| inorganic chemistry | the study of substances that od not contain carbon |
| observation | the noting and recording of facts and events |
| organic chemistry | the study of compounds that contain the element carbon |
| phase | any part of a system with uniform composition and properties |
| physical chemistry | the study of the theoretical basis of chemical behavior, relying on mathematics and physics |
| product | a substance formed in a chemical reaction |
| reactant | a starting substance in a chemical reaction |
| scientific law | a concise statement that summarizes the results of a broad variety of observations and experiments |
| scientific method | a method of inquiry that involves observations, hypotheses, and experiments, to formulate theories |
| theory | a thoroughly tested mdel that explains why experiments give certain results |
