5th grade-ch. 11 lesson 3 how do phase changes occur
TRANSCRIPT
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Ch. 11 Lesson 3How do phase
changes occur?
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state (phase)
of matter
shape/
volume
description
solid definite shape & volume
forces keep
particles close
together
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state (phase)
of matter
shape/ volume
description
liquid no definite shape- definite volume
takes shape of container
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state (phase) of
matter
shape/volume
description
gas no definite shape-
no definite volume
particles far apart
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freezing pointfreezing point• same as melting pointsame as melting point
• physical propertyphysical property
• water = 0water = 0ooCC
– lower when salt added lower when salt added
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•when materials cool get smaller b/c particles have less space between them
•except water
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Water expands when it freezes.
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boiling point• temp. @ which liquid turns into gas bubbles
• physical property
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evaporation•when particles leave a liquid’s surface gas
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condensation•gas liquid
F18 crossing the sound barrierwith vapor condensation
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invisible man
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•dew forms when water vapor cools
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steam • tiny water droplets
• liquid state of water