ch 16 solids, liquids, and gases
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Ch 16 Solids, Liquids, and Gases. 16.1 Kinetic Theory. WYNTK: What is the KMTM? Can you describe how particles move. A. Kinetic Molecular Theory of Matter. KMTM All matter is composed of small particles (atoms, molecules, and ions.) These particles are in constant and random motion - PowerPoint PPT PresentationTRANSCRIPT
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Ch 16 Solids, Liquids, and Gases
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16.1 Kinetic Theory
• WYNTK:– What is the KMTM?– Can you describe how particles move
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A. Kinetic Molecular Theory of Matter
• KMTM– All matter is composed of small particles (atoms,
molecules, and ions.)– These particles are in constant and random
motion– These particles are colliding w each other and the
walls of their container.
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B. Thermal Energy
• Total energy of a material particles (vibrations)• Warmer – more movement• Cooler – less movement
• What is Kinetic Energy???
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C. Solid State
- Most have specific geometric shape- Most dense (except water)- Specific shape, volume- Crystaline vs. amorphous
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D. Liquid State
• Specific volume, no specific shape, ability to flow.
• Higher thermal energy• Melting point – slips from solid to liquid• Heat of fusion – amt of energy take to change
1 degree C.
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E. Gas State
• No fixed shape or volume. Con be compressed
• Have the ability to flow• Vaporization (bottom)/Evaporation (top) –
going from liquid to gas• Higher thermal/ kinetic energy• Heat of vaporization – amt of energy needed
to boil
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F. Plasma State
• Particles hit so hard, electrons fly off.• Sun, stars, lightning bolts neon lights. • Most common in universe
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F. Thermal Expansion
• More kinetic energy, more expansion
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16.2 Properties of FluidsLiquid or gas
• A. Archimedes’ Principle – buoyant force is equal to the weight of the fluid displaced by the object.
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B. Pascal’s Principle
• Pressure is force exerted per unit area P = F/A
When you squeeze one end of something, the pressure is transmitted unchanged-applies to hydraulic pumps.
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C. Bernoulli’s Principle
• Faster the air moves, the lower the pressure
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