| A | B |
|---|
| Mass | Amount of matter in an object |
| Volume | Amount of space an object takes up |
| Weight(on earth) | Measure of the force of gravity of earth on an object |
| Density | Amount of mass in a given volume |
| Buoyancy | Upward push exerted by a liquid or gas on an object placed in it. |
| Conduct | Allow heat or electricity to pass through easily |
| Insulate | Not allow heat or electricity to pass through easily. |
| Element | A pure substance that cannot be broken down into anything simpler |
| Compound | A substance formed by 2 or more elements combining together |
| Atom | The smallest unit of an element that still has the properties of the element |
| Proton | Particle with positive charge in the nucleus of an atom |
| Neutron | Particle with no charge in the nucleus of an atom |
| Electron | Particle with negative charge that moves around the nucleus of an atom |
| Nucleus | The dense center part of an atom |
| Molecule | A group of more than one atoms joined together |
| Chemical reactivity, Boiling Point, Melting point | Some properties of elements |
| Metals, Metalloids, Non-metals | Form the periodic table of elements |
| NaCl | Sodium Chloride or common salt |
| Three-atom molecule of oxygen | Ozone |
| Number of protons in an atom | Determines the element;unique to an element |
