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Understanding Intermolecular Forces and States of Matter

This text explores the fundamental concepts of intermolecular forces and their relation to the states of matter, focusing on solids, liquids, and gases. It explains how solids are characterized by strong intermolecular forces that must be overcome to melt into liquids. As a substance is heated, these forces weaken, allowing the liquid to transition into a gas. The process can be reversed when cooling occurs. The description also includes the types of intermolecular forces such as London dispersion forces, highlighting their significance in molecular interactions.

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Understanding Intermolecular Forces and States of Matter

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  1. Intermolecular Forces

  2. What state of matter is represented by these particles? Solids

  3. In order to melt this solid the forces of attraction between these particles must be overcome.

  4. In order to melt this solid the forces of attraction between these particles must be overcome.

  5. In order to melt this solid the forces of attraction between these particles must be overcome.

  6. In order to melt this solid the forces of attraction between these particles must be overcome.

  7. The forces between these liquid particles are weaker now since the particles are further apart

  8. The forces between these liquid particles are weaker now since the particles are further apart

  9. If the substance is heated further the liquid can turn into a gas

  10. If the substance is heated further the liquid can turn into a gas

  11. If the substance is heated further the liquid can turn into a gas

  12. If the substance is heated further the liquid can turn into a gas

  13. If the substance is cooled the gas will turn back into a liquid

  14. If the substance is cooled the gas will turn back into a liquid

  15. and then into a solid

  16. the energy required to overcome these forces of attraction determine the substance’s melting point.

  17. the more energy required, the higher the melting point.

  18. Types of Intermolecular Forces Between Molecules

  19. Types of Intermolecular Forces Between Molecules

  20. Types of Intermolecular Forces Between Molecules

  21. Types of Intermolecular Forces Between Molecules London Dispersion Forces – very weak attractive forces between all molecules

  22. Types of Intermolecular Forces Between Molecules London Dispersion Forces – only important between non-polar molecules nonpolar nonpolar nonpolar nonpolar nonpolar nonpolar nonpolar nonpolar nonpolar nonpolar nonpolar nonpolar

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