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Matter Vocabulary OW
Matter Vocabulary
Term | Definition |
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matter | material that takes up space and has mass |
mass | the amount of matter in an object |
volume | the size of an object |
law of conservation of matter | scientific law that states that matter cannot be created nor destroyed but can change states |
physical change | a process that does not change the chemical make up in a substance |
chemical change | a process that involves a change in the chemical make up of the substance |
solid | has definite size (volume) and shape; particles are packed together tightly and movement is not fast |
liquid | has a definite size (volume) but no definite shape; particles are more active and farther apart than a solid |
gas | has no definite size (volume) or shape: particles are far apart and move very fast |
plasma | the basic state of matter on the surface of the sun |
condensation | a change from a gaseous to a liquid state, caused by a decrease in temperature |
evaporation | a change from a liquid to a gaseous state, caused when a liquid is heated to its boiling point |
freezing | a change from a liquid to a solid state, caused when a substance reaches the freezing point |
melting | a change from a solid to a liquid state, caused by an increase in temperature to the meting point of the substance |