| A | B |
| Accuracy | How close a measured value is to the true value of a property being measured. |
| Base unit | Metric or SI unit of measurement; e.g. gram or meter or second. |
| Celsius | A metric temperature scale; freezing and boiling points of water are 0 and 100 respectively. |
| Chemistry | The scientific study of the structure and behavior of matter. |
| Data | values of measurements made in the course of a scientific investigation. |
| Experimentation | To collect data about a system under controlled conditions to extend initial observations or test a hypothesis. |
| Hypothesis | An educated guess at the answer to a question raised by observations. |
| Kelvin | A metric temperature scale; absolute zero is lowest temperature possible. |
| Kilogram | A mass equal to 103 (1000) grams |
| Magnitude | The size of a numeric value; often given using scientific notation |
| Mass | The amount of matter in an object which produces gravitational attraction;inertia |
| Matter | Anything that has mass and volume |
| Observation | A basic sensory input that may initiate a scientific question. |
| Precision | How similar a group of independent measurements are to each other. |
| Metric prefix | A term which indicates a multiplier for a metric base unit; kilo- centi- giga- are examples |
| Publish | Communicate of a research report. |
| Research | An activity carried out to collect data to characterize some object |
| Second | A metric base unit of time. |
| Meter | A metric base unit of distance. |
| Gram | A metric base unit of mass. |
| Standard | An agreed upon value for a unit of measure. |
| Temperature | A measure of heat energy content of matter. |
| Time | A measure of the degree of coincidence of two events. |
| Unit | A defined quantity based upon a standard |
| Uncertainty | A measure of the precision of a measurement. |
| Value | A number and unit together representing the result of a measurement or calculation. |
| Weight | A measure of the force of gravity acting on an object’s mass. |