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Bonds: Holding Molecules Together

Bonds: Holding Molecules Together. November 27, 2012. Review. A chemical bond is a force that holds two atoms together in a molecule. In order for a chemical reaction to take place, the original bonds must break and new ones must form. Breaking & Making Bonds.

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Bonds: Holding Molecules Together

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  1. Bonds: Holding Molecules Together November 27, 2012

  2. Review • A chemical bond is a force that holds two atoms together in a molecule. • In order for a chemical reaction to take place, the original bonds must break and new ones must form.

  3. Breaking & Making Bonds • Chemical bonds in starting substance must break. • If molecules bump into each other with enough energy, the bonds will break. • What happens next? • The atoms will then rearrange and new bonds form to make the new substance.

  4. New Bonds, New Substances • What happens when hydrogen and chlorine are combined? • A chlorine gas molecule is diatomic. • A hydrogen gas molecule is diatomic. • When the two different molecules react the bonds between the two diatomic molecules break. • What is the new substance that is created?

  5. Class Activity • While working in groups, student will imitate the breaking of bonds of two diatomic molecules and show the creation of a new substance.

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