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8th GRADE SCIENCE
Chap 2 Vocabulary Quiz 1
Term | Definition |
---|---|
sublimation | this occurs when a solid substance turns directly into a vapor becoming a liquid first |
matter | anything that occupies space and has a mass |
pure substance | materials made of just one kind of particle |
mixture | combinations of two or more pure substances |
state of matter | solid, liquid, or gas |
temperature | the form of energy that usually determines a substance's state of matter |
solid | forms when the attraction between particles is greater than their ability to move away from each other |
liquid | forms when particles of a substance can move around but are still close together |
gas | when particles are far apart and move very fast |
plasma | the state of matter in the sun; acts like a gas but has charged electrically charged particles |
melting | when warm temperatures move particles of a solid far apart forming a liquid |
freezing (solidification) | when particles slow down until their attraction to each other locks them into a fixed position |
vaporization | the change from a liquid state to a vapor |
boiling | happens when vaporization happens so fast that bubbles form in a liquid |
evaporation | if vaporization occurs over a long period of time at temperatures below the boiling point of that liquid |
condensation | forms when gas particles clump together as temperatures drop and a liquid forms |
sublimation | this occurs when a solid substance turns directly into a vapor without becoming a liquid first |
deposition | particles in the vapor state can collect on cool surfaces without becoming a liquid first |