Simple Molecular Substances

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4 Terms

1
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What are simple molecules are made of what?

Molecules containing a few atoms joined together by covalent bonds.

2
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What are the main examples of simple molecules?

  • Hydrogen

  • Chlorine

  • Oxygen

  • Nitrogen

  • Methane

  • Water

  • Hydrogen Chloride

3
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What are the properties of simple molecules?

  • Weak forces of attraction between the molecules

  • Low boiling and melting points - you don’t need to break the covalent bonds, just the intermolecular force.

  • Gases or liquids at room temperature

  • Don’t conduct electricity

4
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What happens if the molecule gets bigger?

The strength of the intermolecular forces increases, so more energy is needed to break them, and the boiling and melting point increases.