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PS_8th_CH5_Chemical Bonds: Ionic & Covalent

You will have the opportunity to earn two test grades for chapter 5. Fist opportunity will be anormal test. Second will be a group project Ionic and Covalent Bond Poster and Model Project.

Test 1 Study Guide is listed below download it to complete it for a grade. Also listed below are fact on Ioinc vs. Covalent Bonds. You should be able to complare and contrast the two types of componds and the way they bond.

Ionic Compounds:

  • The number of valence electrons in an atom of an element determines many properties of that element, including the ways in which the atom can bond with other atoms.
  • The periodic table gives you information about the arrangement of electrons in atoms.
  • The elements within a group have similar properties because they all have the same number of valence electrons in their atoms.
  • When an atom loses an electron, it becomes a positive ion. When an atom gains an electron, it becomes a negative ion.
  • Ionic bonds form as a result of the attraction between positive and negative ions.
  • When ionic compounds form, the charges on the ions balance out.

Ionic Bond Animation from class:

http://www.youtube.com/watch?v=xTx_DWboEVs&feature=related

Online Form:

http://spreadsheets.google.com/viewform?formkey=dE5QT3hjdW8yWDc3cUxwYTc0UHFaMnc6MA

 

Covalent Bonds

  • The force that holds atoms together in a covalent bond is the attraction of each atom’s nucleus for the shared pair of electrons.
  • Atoms can share 1 pair of electrons in a double bond, 2 pairs of electrons in a double, and 3 pairs in a triple

Covalent Bond Animation from class: 

http://www.youtube.com/watch?v=1wpDicW_MQQ&feature=related