| Term | Definition |
| Atom | The basic unit of a chemical element |
| Boiling point | The temperature at which a liquid boils and turns to vapor |
| Conductivity | The degree to which a specified material conducts electricity |
| Density | The amount of mass in a certain volume |
| Electron | A stable subatomic particle with a charge of negative electricity |
| Element | A part or aspect of something, esp. one that is essential or characteristic. |
| Hazard Symbol | Hazard symbols are recognizable symbols designed to warn about hazardous materials or locations |
| Mass | A coherent, typically large body of matter with no definite shape. |
| Melting point | The temperature at which a given solid will melt |
| Neutron | A subatomic particle of about the same mass as a proton but without an electric charge |
| Nucleus | The positively charged central core of an atom, containing most of its mass. |
| Proton | A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron |
| State | the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container)) |
| Subatomic Particle | a body having finite mass and internal structure but negligible dimensions. |
| Volume | the amount of space occupied by a three-dimensional object or region of space, expressed in cubic units |
| WHMIS | The Workplace Hazardous Materials Information System |
