States of Matter

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States of Matter

• Chapter 3 Section 1

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Solids

• Solids have a definite shape and volume
• Particles in a solid are closely packed together.
  

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Types of Solids

• 1. Crystalline Solids
• Particles form regular, repeating patterns.
• Melt at specific temperature
• For example Salt Sugar Ice
• 2. Amorphous Solids
• Particles are not arranged in repeated pattern
• Do not melt at specific temperature
• For example Rubber, Plastics, Glass

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Liquids

• Liquids have a definite volume, but no specific
  shape.
• Particles are packed closely, but they are free
  to move around and collide with each other.
• Fluid Substance that flows.
• Do liquids have a shape of their own?
• What shape do liquids take?
• Why doesnt a liquid have a definite shape?
• How do the motions of the particles in ice and
  water differ?

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Properties of Liquids

• 1. Surface Tension
• The molecules of a liquids are attracted to and
  pull towards each other.
• Can you think of some examples?
• 2. Viscosity
• Liquids resistance to flowing depends on size,
  shape and attraction between particles.
• High Viscosity Slow Flow
• Low Viscosity Fast Flow
• Can you think of some examples?

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Surface Tension!
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Gases

• No specific shape OR volume
• Particles flow freely and either spread out or
  squeeze together depending on the container
• Constantly moving and colliding in all directions
• Why dont gases have a specific shape or volume?
• Draw a diagram of gas molecules in a closed
  container.
• Then, draw a diagram of what happens if the
  container is opened.

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