Chapter Nine
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Absolute zero
The temperature at which all atomic motion would cease, which is zero Kelvin.
Chemical property
A property that describes chemical reactions a substance will or will nor engage in.
Combustion
A chemical reaction in which a substance combines with oxygen to produce heat and flame.
Density
The ratio of mass to volume for a substance; a physical property that describes the amount of mass in a given volume.
Evaporation
When a substance undergoes the phase transition from liquid to gas.
Heat of fusion
The energy required to melt a solid substance while keeping its temperature the same.
Heat of vaporization
The energy required to vaporize a liquid substance while keeping it’s temperature the same.
Physical property
A non-chemical characteristic of a substance
Plasma
An ionized gas, recognized as one of the four phases of matter, the other three being solid, liquid, and gas.
Pressure
The amount of force present per unit area on a surface.
Sublimation
A phase transition in which a substance transitions from a solid into a gas without going through the liquid phase.
Vaporization
The process of transitioning to the gas or vapor phase; boiling.