PhaseChange_KWL

__**Phase Change - KWL**__
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What I think I **K**now about phase change before CTS:
 * Molecules are always moving.
 * How fast or slow molecules move depends on how much energy they have.
 * The speed of the molecules that make up material or matter determines the state/phase of the material or matter.
 * Phase diagrams provide information about equilibrium points and other physical properties of material.
 * There are four phases of material or matter: solid, liquid, gas, and plasma.
 * Energy is either input or released during phase change.
 * Melting/Freezing point is where matter exists as a solid and liquid in equilibrium.
 * Boiling occurs at a specific temperature; evaporation can occur at any temperature.
 * Evaporation only occurs on the surface; boiling occurs throughout.
 * Dynamic equilibrium for phase change means that the ratio of molecules in different phase remains constant although molecules can move between phases.
 * The amount of energy required (e.g. heat of vaporization) for phase change to occur is a property of the material.

What I **W**ant to learn about phase change during CTS:
 * What is a plasma?
 * Where do plasmas fit in on phase diagrams?
 * How does boiling work (bubbles, pressure, partial pressure, etc.)?
 * What is sublimation? How does it work?
 * Why do different materials have different energy requirements for phase change?

What I **L**earned about phase change after CTS: