The Particle Theory of Matter

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The Particle Theory of Matter

• What is matter?
• Matter is defined as anything that occupies space
  has mass.
• Example
• air, water, living things, non-living things

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States of Matter

• Matter can exist as a solid, liquid, gas or as
  plasma (primarily in space).
• The properties of solids, liquids, gases can be
  explained by the kinetic movement of matter.

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Kinetic Theory of Matter

• 1. All matter is made of many small
  discrete particles (atoms, ions, molecules)
• In solids, the particles are closely packed in
  orderly manner.
• In liquids, the particles are not as closely
  packed as solids and are arranged in disorderly
  manner.
• In gases, the particles are distributed very far
  apart in random manner.

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Kinetic Theory of Matter

• 2. The particles are always in constant
  random motion.
• In solids, the particles vibrate about their
  fixed positions.
• In liquids, the particles move about sliding and
  rolling past one other in random motion.
• In gases, the particles move about freely at high
  speeds and in random motion.

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Physical properties of the solid, liquid and
gaseous states