| A | B |
|---|
| characteristic/property | information about a substance that can be used to identify the unknown substance |
| chemical change | change of one substance to a new substance; it cannot be reversed |
| chemical property | characteristic of a substance that indicates whether it can undergo a chemical change includes acidity, basicity, combustibility, and reactivity |
| color | a physical property of matter resulting from light being reflected, or absorbed |
| combustibility | ability of a substance to catch fire and burn easily |
| compound | a substance made of two or more elements that are chemically combined |
| density | mass per unit of volume of a material |
| element | substance in which all the atoms in a sample are alike |
| matter | anything that has both mass and volume |
| mixture | two or more substances that can be separated by physical means and not chemically combined |
| molecule | the smallest particle of a compound that retains the properties of the compound |
| odor | a smell |
| Particle Theory of Matter (Kinetic Theory of Matter) | Says that particles in constant motion make up all matter |
| phase change | physical change of matter from one state to a different caused by a change in heat energy (added or removed), there is no change in temperature (example: solid to liquid, liquid to gas or vice versa) |
| physical change | a change in size, shape, or state of matter |
| physical property | any such characteristic of a material that you can observe without changing the substances that make up the matte; includes shape, density, solubility, odor, melting point, boiling point, and color |
| reactivity | A substance's ability to combine with another substance |
| shape | the form or contour of an object |
| solid | definite shape and definite volume |
| solubility | the amount of a substance that will dissolve in a solute |
| substance | either an element or compound which cannot be reduced to basic components by physical processes |
| volume | amount of space occupied by an object |
