What A Phase Change?

• A phase change is when matter changes to from one state (solid, liquid, gas, plasma) to another. (see figure 1). These changes occur when sufficient energy is supplied to the system (or a sufficient amount is lost), and also occur when the pressure on the system is changed.

Question:

What a Phrase Change?

Answer:

Phrase Change:

» A Phase Change is a transition of matter from one state to another. Phase changes occur regularly in nature and can be conducted by people. The phase in which matter exists is determine by the pressure and temperature of its surroundings. By manipulating the pressure and temperature, you can change the phase of the matter.

» Changes of state are physical changes. They occur when matter absorbs or loses energy.

There are 5 common

phases of matter:

» Freezing occurs when liquid change to solid.

» Melting occurs when solid change directly to liquid.

» Sublimation occurs when solid change directly to gas. Deposition occurs when gas changes directly to solid.

» Condensation is when gas changes directly to liquid.

» Evaporation happens when liquid change directly to gas.

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