3 Phases of Matter
• Solid, Liquid, and Gas
• Water can transfer from one phase to the next
if you simply add or remove energy (heat)
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Boiling
• Boiling is when a
liquid is changing
phase to a gas
(vaporization).
• Addition of Heat
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Boiling Point
• A particular temperature that a substance boils.
• Water = 212F and 100C
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings
Freezing
• When a liquid changes phases to a solid.
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Freezing Point
• A temperature at which a substance Freezes
Water = 32F and 0C
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Melting Point
• Temperature at which a substance Melts from
Solid ➔ Liquid
• Ice = 32F and 0C
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings
Where does the heat go?
• There is no temperature change on graph
yet, heat is put into the material. The heat is
absorbed by molecules to change phase.
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings