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9 January, 00:59

Use kinetic-molecular theory to describe what happens when an ice cube or icicle melts. Include how energy is involved and what happens to the motion of the water molecules

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  1. 9 January, 02:34
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    Kinetic-molecular theory explains the behavior of matter as result of the movement of tiny particles named molecules (group of atoms in a defined ratio).

    The molecules in a solids (as the ice cubes) are very close to each other and have a very limited movement. The particles vibrate and oscilate but do not translate, their translation speed is zero. The intermolecular forces are high.

    When a solid melts (ice cubes transform in liquid water) the molecules start to separate, the intermolecular forces decrease and the molecules gain speed. Yet the intermolecular forces are high enough to keep prevent the independent movement of the molecules (in a gas the intermolecular forces have decreased so much that the gas molecules move independently of each other)
  2. 9 January, 02:46
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    Include the following in your answer:

    -The particles in a solid move faster as the solid absorbs heat.

    -The particles in a solid overcome the attractions that hold them together as the solid melts.

    -The particles slide past one another, but are still close together during the liquid phase.
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