| A | B |
|---|
| matter | Any thing that occupies space and has mass. |
| pure substance | Material made of just one kind of element or compound. |
| mixture | Two or more substances mixed together but not chemically bonded. |
| state of matter | Physical form of matter described by its rigidity or fluidity, its ability to hold its shape and how definite its volume is. |
| temperature | A measure of the average kinetic energy of the vibration particles of a substance. |
| solid | A rigid state of matter composed of particles in a fixed arrangement. |
| liquid | Fluid state of matter in which particles are close together but can move freely about. |
| gas | Fluid state of matter in which particles are so far apart, there is almost no attraction between them. |
| plasma | Fluid state of matter made of extremely high temperature ionized particles. |
| melting | change of state from solid to a liquid by warming. |
| freezing | Change of state from a liquid to a solid by cooling. |
| vaporization | Change of state from a liquid to a gas. |
| boiling | Change of state from a liquid to a gas at a specific temperature |
| evaopration | Change of state from a liquid to a gas below the boiling point of the liquid. |
| condensation | Change of state from a gas to a liquid by cooling. |
| sublimation | Change of state from a solid directly to a gas without becoming a liquid first. |
| deposition | Change of state from a gas directly to a solid without becoming a liquid first. |
| mass | measurement of of the amount of matter an object contains. |
| weight | Force of gravitational attraction for an object's mass. |
| volume | Amount of space a sample of matter occupies. |
| force | A push or pull on an object |
| gravity | Force of attraction between any two objects originating in thematter they contain. Based on mass and distance. |
| work | This is accomplished when a force moves an object in the same or opposite direction of its motion. |
| energy | Ability an object has to do work. |
| first law of thermodynamics | Matter and energy cannot be created or destroyed, but can only be changed from one form to another. |
| atom | smallest neurtral particle that can be identified as and element. |
| ion | Charged atom or group of atoms. |
| element | A pure substance made of only one kind of atom. |
| compound | Pure substance composed of two or more elements chemically combined. |
| molecule | Distinct particles composed of two or more atoms bonded together. Both elements and compounds can be composed of molecules. |
| physical change | Change in matter that doesn't alter its chemical identity. |
| chemical change | Results in the joining or breaking of bonds between atoms forming pure substances different from the original substance. |
| nuclear change | Change occurring in the nucleus of an atom when it emits or absorbs rays or particles, or when the nucleus splits (fission) or joins with another (fussion) |
