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Class 1

Three-Phase Model of Matter

How do we change the phase or temperature of matter? adding or removing energy (ex: transfer it through heat)
Energy Interaction Diagrams shows how energy interacts between substances
Energy Forms Thermal, Bond, Kinetic, Potential (gravity), and Potential (spring)
Indicators of energy transfer For thermal energy: temperature; For bond energy: amount of substance in a "higher" phase (between initial and final phase)
How do you set up an Energy Interaction Diagram? Define system Define interval, Track indicator and energy changes Open or closed system Energy Equation
System: H20 (initial = -10C, final = 15C) How can we model how much energy is needed to melt ice initiatlly at -10C, and bring it to 15C Note each phase and temp change for the substance: Ice. Thermal Energy. (initial -10C and final 0C); Mixed. Bond Energy. (initial all solid and final all liquid) Water. Thermal Energy. (initial 0C and final 15C
Created by: Sepith