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Model of Matter - The Particulate Nature of Matt ...

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  • What are the physical properties of a liquid?
    No definite shape, fixed volume, lower density than solids, cannot be compressed.
  • What happens during contraction?
    The particles lose energy and vibrate less vigorously, the particles move closer together causing the colume of matter to decrease.
  • Describe the arrangement of particles in a liquid.
    Packed close togehter, no fixed regular pattern.
  • Describe the movement of particles in a liquid.
    They are able to slide past one another.
  • How do particles move in a solid?
    Unable to move freely, vibrate in fixed positions.
  • What happens when matter is heated?
    The particle gain energy and vibrate more vigorously, they move further apart, this causes the volume of matter to increase.
  • What happens to the volume of a solid when it is cooled?
    It contracts, gets smaller.
  • What happens to the volume of a solid when it is heated?
    It expands, gets larger.
  • Describe the arrangement of particles in a gas.
    Far apart from one another, no fixed regular pattern.
  • How do particles of all matter move?
    In constant and random motion.
  • What happens when matter is cooled?
    The particles lose energy and vibrate less vigorously, the particles move closer together causing the colume of matter to decrease.
  • How does Brownian motion caused?
    It is caused by the collision between differnet particles. Example: water particles and pollen grains bumping into each other.
  • Describe the arrangement of particles in a solid.
    Packed close together in a fixed, regular pattern.
  • What are the physical properties of a gas?
    No definite shape or volume, lowest density, can be compressed.
  • How do the particle of one pure substance look?
    They are identical.
  • Describe the forces of attraction between particles in a gas.
    Weak forces of attraction.
  • Describe the force of attraction between particles in a solid.
    There are very strong forces of attraction.
  • Describe the foces of attraction that hold together the particles in a liquid.
    Strong forces of attraction.
  • What are the physical properties of a solid?
    Definite shape and volume, higher density than liquids or gases, cannot be compressed.
  • What happens to the mass of matter during expansion and contraction?
    Nothing, it remains the same.
  • What does Brownian motion describe?
    That all particle of matter are constantly moving in a random manner.
  • What is all matter made up of?
    Small discrete particles
  • What happens during expansion of matter?
    The particle gain energy and vibrate more vigorously, they move further apart, this causes the volume of matter to increase.
  • Describe the movement of particles in a gas.
    Able to move freely over long distances.
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