Phases of Matter and Phase Changes. Phase. Depends on strength of forces of attraction between particles. Solids. Definite shape, volume. Regular crystalline lattice structure. Most dense phase (exception is water!). Difficult to compress. Highest attraction between particles.
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glass, plastic, wax, and silly putty
Condensation Vaporization (Boiling or Evaporating)
Solidification Melting (fusion)
CO2(s) → CO2 (g)
Use these constants in Heat Equations
Hf = heat of fusion = 334J/g
Hv = heat of vaporization = 2260J/g
Specific Heat Capacity (“c”) = 4.18 J/g x K
Joules of heat needed to raise 1 gram of a
Ex: Piece of Iron vs. Water.
(Temp. constant) use one of these formulas:
Q = mcΔT
mcΔT = mcΔT