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