| Term | Definition |
| Physical Property | A property of matter that can be observed or measured without changing the identity of the matter |
| Thermal Conductivity | The ability to transfer heat from one area to another. |
| State | The physical form in which a substance can exist. |
| Malleability | The ability to be pounded into thin sheets. |
| Ductility | The ability to be drawn into a wire. |
| Solubility | The ability to dissolve in another substance. |
| Density | The amount of matter in a given space. |
| Chemical Property | A property of matter that describes a substance based on its ability to change into a new substance with different properties. |
| Flammability | The ability to burn. |
| Reactivity | The ability for something to happen when two substances get together. |
| Physical Change | A change that affects one or more physical properites of a substance; many changes are easy to undo |
| Chemical Change | A change that occurs when one or more substances are changed into entirely new substances with different properties; these changes cannot be reversed. |