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Chapter 5 Lesson 3
Changes of State
Question | Answer |
---|---|
condensation | happens when a substance changes from a gas to a liquid |
sublimation | happens when a substance changes directly from a solid to a gas |
freezing point | the temperature at which a substance changes from a liquid to a solid |
boiling point | the temperature at which a substance changes from liquid to a gas |
melting point | the temperature at which a substance changes from a solid to a liquid |
evaporation | happens when a substance changes from a liquid to a gas |
thermal expansion | the increase in an object's volume due to a change in heat |
thermal contraction | the decrease in an object's volume due to a change in heat |
3 states of matter | solid, liquid, gas |
solid | molecules are tightly packed allowing very little room for movement |
liquid | molecules move more freely and take on the shape of its container and has a definate volume |
gas | molecules are far apart and has no definate volume or shape |
heat | the removal or addition of this causes matter to change states |
dew or moisture on outside of a soda can | example of condensation |
dry ice | example of sublimation |