changing states 3.5c changing states vocabulary matter gas solid liquid heat temperature conductor...
TRANSCRIPT
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Changing States
3.5C
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Changing States Vocabulary
matter
gas
solid
liquid
heat
temperature
conductor
insulator
freezing
melting
evaporating
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Matter
Matter is anything that has mass and takes up space.
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Solids Solids have a
definite shape and volume.
Solids have mass. Solids take up
space.
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Liquids Liquids have a
definite volume but no definite shape.
Liquids take the shape of their container.
Liquids have mass. Liquids take up space.
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Gasses Gasses have no definite
shape or volume. Gasses spread out to fill
the entire space given. Gasses have weight. Gasses take up space.
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States of Matter
What does it take for matter to move from one state to another?
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Energy determines the state!
SOLIDS
LIQUIDS
GASES
+ Energy
+ Energy
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Add or Subtract Energy. . .
When energy is added, particles move faster!
When energy is removed, particles move slower!
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• Measure of the movement of molecules (tiny particles) in matter
• Measured using a thermometer or temperature probe
• Scientists use the Celsius scale to measure temperature
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What will happen if heat is added? Why?
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Solid + Energy = ?
When energy is added to solids, they become liquids!
Examples?
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Liquid + Energy = ? When energy is
added to liquids, they become gasses!
What examples can you think of?
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Changing States There are several names for matter changing states:
State change
Phase change
Physical change
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Ice changes to water—water changes to ice, frozen water is still water
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Water changes to steam, a gas, when it is heated to its boiling point, water vapor
condenses to form a liquid
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Changes in State (phase changes)
1.Melting - solid to liquid
2.Freezing – liquid to solid
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Changes in State (phase changes)
3.Evaporating – liquid to gas
4.Condensing - gas to liquid
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So, did we get something new?
Ice cream and melted ice cream?
Chocolate and melted chocolate?
Ice, water, and water vapor?
Steel and molten steel?