chapter 15 kinetic molecular theory. some amazing things
TRANSCRIPT
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Chapter 15
Kinetic Molecular Theory
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Some Amazing Things
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Kinetic Theory
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Kinetic Theory• All matter is composed of tiny particles.
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Kinetic Theory• All matter is composed of tiny particles
– Atoms
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Kinetic Theory• All matter is composed of tiny particles
– Atoms– Molecules
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Kinetic Theory• All matter is composed of tiny particles
– Atoms– Molecules– Ions
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Kinetic Theory
• These tiny particles are in constant motion.
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Kinetic Theory• Collisions between moving particles are
perfectly elastic.– In an elastic collision there is no net change in
kinetic energy.
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Pressure
• Pressure depends on two factors
1. Force
2. Area
Pressure =Force
Area
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Examples of Pressure
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Gas Pressure
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Temperature• How hot or cold
• Average kinetic energy
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Absolute Zero
K = °C + 273
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How do we lower temperature?
• We slow down the particles.
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Kinetic Energy
KE = ½ mv2
When considering kinetic energy we must consider two factors.
1. Mass
2. Velocity
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You’ve been bad and you were caught!
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New Discipline System
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Wow! Mr. Taylor-Lehman isn’t here
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Do Not Touch
HCNH2S
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Or DieStink
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Homework
• Worksheet #34 “Temperature and Particle Motion”