| A | B |
|---|
| Chemistry | The study of the composition of matter and the changes that matter undergoes. |
| Physical Chemistry | The area of chemistry that deals with the mechanism, the rate, and the energy transfer that occurs when matter undergoes a change. |
| hypothesis | A proposed explanation for an observation. |
| Biochemistry | The area of chemistry that focuses on processes that take place in organisms. |
| Independent variable | The variable that is changed during an experiment; also called manipulated variable. |
| Dependent variable | The variable that is observed during an experiment; also called responding variable. |
| qualitative | Observations dealing with or pertaining to the physical condition of a substance. |
| Theory | A well-tested explanation for a broad set of observations. |
| Scientific Law | A concise statement that summarizes the results of many observations and experiments. |
| Scientific Method | A logical, systematic approach to the solution of a scientific problem. |
| precision | Describes the closeness, or reproducibility, of a set of measurements taken under the same conditions. |
| accuracy | The closeness of a measurement to the true value of what is being measured. |
| quantitative | Observations dealing with or pertaining to the measurable condition of a substance. |
| Organic Chemistry | The study of compounds containing carbon. |
| Inorganic Chemistry | The study of substances that, in general, do not contain carbon. |
| Analytical Chemistry | The area of chemistry that focuses on the composition of matter. |
| physical change | A change during which some properties of a material change, but the composition of the material does not change. |
| chemical change | A change during which a substance undergoes a change to the composition of the material. |
