Chapter 6 - Thermodynamics_Part2 - GENERAL CHEMISTRY...

GENERAL CHEMISTRY CHAPTER 6 – THERMODYNAMICS
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→ External Kinetic Energy = Kinetic energy associated with the overall movement of a body
→ Internal Kinetic Energy = Kinetic energy associated with the random motion of particles in a body
→ Internal energy can be increased by:
 Compression, distortion of an object
 Put the object in contact with a hot object by increasing the temperature ⇒ KE α T
→ Increasing temperature causes the particles to speed
up and collide into each other more
→ The more collisions the more internal kinetic energy
the object has

GENERAL CHEMISTRY CHAPTER 6 – THERMODYNAMICS
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Heat Capacity and Specific Heat Capacity
→ When a system absorbs heat, its temperature increases
 The increase in temperature is directly proportional to the amount of heat absorbed
⇒ The proportionality constant = heat capacity, C
⇒ Units of C are J/°C or J/K
Heat  q = C x ∆ T
→ The heat capacity of an object depends on its mass
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