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States of Matter
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TRUE or FALSE: A system requires energy to change from a solid state to a liquid state.
True
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TRUE or FALSE: The reverse of the melting process is called freezing.
True
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In which state of matter do molecules slide past each other?
Liquid
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Changing from a gas to a solid is called....
Deposition
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Give one example of deposition
Frost
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Which state of matter does this picture represent?
Liquid
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Changing from a gas to a liquid is called....
Condensation
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TRUE or FALSE: You can change a solid into a liquid by freezing it.
False
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Which state of matter does this picture represent?
Gas
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Explain how a puddle of water disappears on a sunny day
The liquid water is heated by the sun. The liquid water evaporates and changes to water vapor.
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What is the freezing point?
0°C or 32°F
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As the pressure of a system changes, boiling points can change in what direction? (Increase, Decrease, Both Neither?)
Neither
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TRUE or FALSE: The freezing point will always be a lower temperature than the boiling point.
True
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Changing from a liquid to a gas is called....
Vaporization / Boiling
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Changing from a solid to a gas is called....
Sublimation
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What can cause matter to change states?
Adding / removing energy
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In which state are the particles of matter NOT organized and move very quickly?
Gas
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Matter has 3 main states:
Solid, Liquid, Gas
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Give one example of condensation
Morning dew, foggy mirror, formation of clouds in the sky
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What is the melting point?
100°C or 212°F
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Condensation occurs when water vapor _____ and changes into liquid water. [A. gains heat energy] [B. loses heat energy]
B
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Give one example of sublimation
Dry ice, Air fresheners, moth balls
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Changing from a solid to a liquid is called....
Melting
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In which state are the particles of matter very close in an organized way?
Solid
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