| A | B |
|---|
| Accuracy | The closeness of a measurement to the true value of what is being measured |
| Precision | Describes the closeness |
| Accepted Value | A quantity used by general agreement of the scientific community |
| Chemistry | The study of the composition of matter and the changes that matter undergoes |
| Experimental Value | A quantitative value measured during an experiment |
| Scientific Method | A logical systematic approach to the solution of a scientific problem. |
| Scientific Law | A concise statement that summarizes the results of many observations and experiments. |
| Matter | Anything that has mass and occupies space. |
| Measurement | A quantitative description that includes both a number and a unit |
| Scientific Notation | An expression of numbers in the form of m x 10 ^n where m is equal to or greater than 1 and less than 10 and n is an integer |
| Percent Error | The percent that a measured value differs from the accepted value |
| Significant Figures | All the digits that can be known precisely in a measurement plus a last estimated digit |
| International System of Units | The revised vision of the metric system adapted by international agreement in 1960 |
| Density | The ratio of the mass of an object to its volume. |
| Mass | The measure of the amount of matter that an object contains. |
| Volume | A measure of the space occupied by a sample of matter |
| Hypothesis | potential answer to a question that can be tested by gathering information |
| Independent Variable | factor that is changed by the researcher |
| Constant | a factor that does not change when other variables change |
| Control | the standard by which the test results can be compared |
| Dependent Variable | factor that is being measured; factor that changes as a result of changes in the other factors |
| Physical Science | study of matter and energy |
