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