Name_____________________________
1) Solid- a phase of matter characterized by resistance to deformation and to
changes of volume. Least energy.
Example2) Liquid- a substance whose shape is usually determined by the container it fills
and has no defined shape.
Example3) Gas- Unlike liquids unconstrained gases do not occupy a fixed volume, but
instead expand to fill whatever space they occupy. Most energy.
Example-
Images from www.chemistry.wustl.edu/
Name_____________________________
A substance can go from gas to liquid to solid and then these phase changes
have names!!!!!
Now let’s see some examples of phase changes…..
Match the phase change with the example
Phase Change
Example
Melting
Water on the outside of a cold bottle
Freezing
Ice to water
Vaporization
Liquid Nitrogen at room temperature
Condensation-
Dry Ice at room temperature
Sublimation
Water to Ice
Deposition
Water vapor directly into snow
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Liquid Nitrogen Facts!!!
Boiling Point - -196 °C (-320 °F)
- Freeze some stuff (tennis ball, ping pong ball, vegetables, fruit) what happens
when you
- Make a point to tell the to listen to the boiling noise when you introduce a room
temperature object to a very cold liquid( like when you heat a pan and add
water)
Dry Ice Facts!!!!
Melting Point- -79°C (-109 °F)
- Add dry ice to soap and water in a beaker
- Show them how the bubbles trap the carbon dioxide
- Also add dry ice to a balloon and watch it inflate
Name_____________________________