| A | B |
|---|
| sublimation | change from a solid to a gas |
| condensation | change from a gas to a liquid |
| evaporation | change from a liquid to a gas |
| matter | has mass and takes up space |
| atom | all matter is made up of these tiny particles |
| proton | positive particles found in an atom |
| neutron | part of the atom that has no charge |
| electron | negative particle found in an atom |
| nucleus | the central part of the atom that contains the protons and the neutrons |
| orbital | special zones where electrons can be found moving around the nucleus |
| molecule | formed when atoms combine |
| ion | an atom that has lost or gained an electron |
| gases | no fixed volume or shape |
| liquids | assume the shape of their container and has a fixed volume |
| solids | has a fixed shape or volume |
| plasma | fourth state of matter found mostly in space |
| auora borealis | an example of plasma found on Earth |
| covalent bond | the strongest bond |
| energy | the ability to do work |
| force | a push of a pull |
| potential energy | stored energy |
| gravity | a force of nature that holds you on Earth |
| friction | the type of force that opposes motion |
| magnetism | a force of attraction or repulsion |
| kinetic energy | movement in an object |
