| A | B |
|---|
| Matter | The stuff that makes up everything in the universe. |
| Atom | The smallest particle of matter. |
| Element | Pure substances that cannont be broken down into other substances by any physical or chemical means. |
| Molecule | Two or more elements chemically combined. |
| Compound | A substance made of two or more elements chemically combined. |
| Mixture | Two or more substances occupying the same space, but not chemically combined. A classification of matter. |
| Solution | The best mixed mixture. |
| Chemical Bond | The force that holds elements together to form molecules and compounds. |
| Characteristic Property | A property of a substance that holds true no matter what the sample of the substance. |
| Pure Substance | A substance made of one kind of matter having definite properties. |
| Physcial Change of Matter | A change that alters the form of a substance but not the identity of the substance. |
| Chemical Change of Matter | When substances combine or break apart and form new substances with different properties. |
| Density | The mass in a particular volume. It is a characteristic property of matter. |
| Mass | The measurement of how much matter an object contains. |
| Weight | The measure of the force of gravity pulling down on an object. |
| Volume | The amount of space matter occupies. |
| Proton | The positively charged particle in the atom's nucleus. |
| Neutron | The neutrally charged particle in the atom's nucleus. |
| Electron | The negatively charged particle of an atom. |
| Chemical Activity | The ability of a particular substance to undergo a specific chemical change. |
