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Understanding temperature and kinetic energy

Particle model of matter • Particle model and gas pressure

Key concepts

What you'll likely be quizzed about

  • Kinetic energy is the energy of motion.
  • Every particle in matter possesses kinetic energy, which varies with its mass and speed.
  • The formula for kinetic energy is KE = 1/2 mv², where m represents mass and v represents velocity.

Flashcards

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What defines a liquid state at the molecular level?

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A liquid state features moderate kinetic energy, allowing particles to slide past one another.

Key notes

Important points to keep in mind

Kinetic energy is calculated with KE = 1/2 mv².

Temperature increases kinetic energy of particles.

Higher temperature may lead to state changes.

Particle motion behavior varies with state of matter.

Thermal expansion is a direct consequence of kinetic energy increase.

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