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science
| Question | Answer |
|---|---|
| evaporate | process by which molecules at the surface a liquid absorb enough energy to become gas |
| gas | state of matter with no definite shape or volume |
| pressure | the force pushing on a surface divided by the area of that surface |
| freezing point | temperature at which liquid changes to solid |
| pure substance | a substance made up of all the same types of atoms molecules and elements |
| vapor | when a liquid or solid turns into a gas |
| liquid | state of matter that has no definite shape but has definite volume |
| melting point | temperature at which a solid changes to a liquid |
| atom | the basic and smallest particle from which all elements are made |
| temperature | the measure of the average kinetic energy of the particles of a substance |
| solid | state of matter that has definite shape and volume |
| thermal energy | the total kinetic and potential energy of all particles of an object |
| condense | the changes of state from gas to liquid |
| system | way of working organizing doing something that follows a predictable set of rules |
| particle motion | the change of position of a particle over time |
| phase change | the transformation of matter from one state to another |
| qualitative | observation made using numerical information |
| deposition | when a gas goes directly to a solid |