| Term | Definition |
| chemistry | Is the study of the properties of matter and how matter changes. |
| physics | The study of matter, energy, motion, and forces and how they interact. |
| scientific inquiry | the ongoing process of discovery in science |
| parameter | A factor that can be measured in an experiment. |
| SI | International system of units; a version of the metric used by scientists all over the world. |
| weight | A measure of the force of gravity on you. |
| mass | A measure of the amount of matter an object contains. |
| volume | The amount of space an object takes up. |
| meniscus | The curved upper surface of a liquid in a column of liquid. |
| Kelvin scale | The temperature scale on which zero is the temperature at which no more energy can be removed from matter. |
| absolute zero | The coldest point on a temperature scale. |
| estimate | An approximation of a number based on reasonable assumptions. |
| significant figures | A measurement that includes all of the digits that have been measured exactly. |
| precision | A measure of the exactness of a measurement. |
| line of best fit | A smooth line that reflects the general pattern of a graph. |
| reproducibility | How close a group on measurements are to each other. |