SCIENCE solids liquids gases, TESET
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25 terms
Terms | Definitions |
|---|---|
 melting | change of a solid to a liquid (ice into liquid water) |
| melting point | the temperature at which a substance changes from a solid to a liquid. (At 0 degrees Celsius or 32 degrees Fahrenheit) |
| freezing | change of a liquid to a solid |
| freezing point | temperature at which a substance changes from liquid to solid (same temp's as a melting point. |
| evaporation | changing from a liquid to a gas (100 degrees Celsius, 212 degrees Fahrenheit); water puddle into a cloud |
| boiling point | temperature at which a substance changed from a liquid to a gas. |
| condensation | changing from a gas to a liquid ( same temp as evaporation); cloud to a water puddle. |
| deposition | changing a solid directly into gas(skips the liquid phase); cloud into snowflake |
| deposition | changing a solid directly into a gas skips the liquid phase (dry ice) |
| air pressure | the amount of force exerted by a gas depends on its container |
| pascal | force of one newton per meter |
| boyle's law | If you decrease the volume of a container of gas, the pressure of the gas will increase (temperature does not change |
| archimedes principle | the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object |
| buoyant force | the ability of a fluid or gas to exert on an upward force on an object immersed in it. |
| bernoulli's principle | as the velocity of a fluid increases the pressure exerted by the fluid decreases |
| gases | a.)do not have a definite shape or volume b.) expand when cooled c.) when the particles are farthest apart |
| plasma | a.) a gaslike mixture of positive and negative charged particles b.) most common state of matter |
| solids | a.)expand and contract the lease amount b.) closely packed particles |
| liquid | a.) definite volume b.) take shape of its container c.) when the particles are close together but not tightly packed, or far apart. |
| surface tension | caused by the inward pull of molecules making up a liquid allows water to form droplets |
| viscosity | the resistance of a liquid flow easily |
| amorphous solids | solids that lose there shape under certain conditions |
| kinetic theory of matter | tiny particles in motion make up all the matter |
| ice | water in the solid state |
| sublimation | the change from a gas to a solid |
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