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8th Topic 4
8th Topic 4 Vocabulary
Term | Definition |
---|---|
Solid | a state of matter that has a definite shape and a definite volume. |
Liquid | a state of matter that has no definite shape but has a definite volume |
Surface tension | the result of an inward pull among the molecules of a liquid that brings the molecule on the surface closer together, causing the surface to act as if it has a thin skin. |
Viscosity | a liquids resistance to flowing |
Gas | a state of matter that has no definite shape or volume. |
Vibrate | to move back and forth slowly |
Thermal Energy | the total kinetic and potential energy of all the particles of an object |
Temperature | the measure of the average kinetic energy of the particles in a substance; how hot or cold something is. |
Melting Point | the temperature at which a substance changes from a solid to a liquid |
Freezing Point | the temperature in which a liquid changes to a solid |
Vaporization | the change of state from a liquid to a gas |
Boiling Point | the temperature at which a liquid boils |
Evaporation | the process by which molecules at the surface of a liquid absorb enough energy to change to a gas |
Condensation | the change in state from a gas to a liquid |
Sublimation | the change in state from a solid directly to a gas without passing through the liquid state |
Suspend | to maintain a position off the ground, with unseen support |
Pressure | the force pushing on a surface divided by the area of that surface |
Charles’s Law | a principle that describes a relationship between the temperature and volume of a gas at a constant pressure |
Boyle’s Law | a principle that describes a relationship between the pressure and volume of a gas at a constant temperature |
Proportional | maintaining consistency between two variables; as one variable increases the other decreases; as one variable decreases the other increases. |