Science - Chemical Bonds

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Author:
mshowley
ID:
150756
Filename:
Science - Chemical Bonds
Updated:
2012-04-28 18:08:52
Tags:
Chemical Bonds
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Description:
Chemical Bonds
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  1. What is a molecule?
    A molecule is made up of two or more atoms joined together
  2. Give an example of a molecule
    Water
  3. Why are noble gases the most stable?
    Because their outer shells have eight electrons
  4. What is the octet rule?
    When bonding occurs atoms try to have eight electrons in their outer shell
  5. Explain the term ion
    An ion is a charged atom or group of atoms
  6. What is an ionic bond?
    An ionic bond is formed when electrons are given or taken by atoms
  7. Give examples of an ionic bond
    Sodium Chloride

    Magnesium Chloride
  8. What is a covalent bond?
    A covalent bond is formed when atoms combine by sharing electrons so that each atom has a stable outer shell of electrons
  9. Give examples of a covalent bond
    Water

    Methane
  10. List the properties of ionic compounds
    They are solids

    They have high melting and boiling points

    They conduct electricity
  11. State the properties of covalent compounds
    They are liquid or gases

    They have low melting and boiling points

    They do not conduct electricity

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