CK-12 Physical Science Concepts - For Middle School

(Marvins-Underground-K-12) #1

http://www.ck12.org Chapter 3. Chemical Interactions


Vocabulary



  • chemical bond: Force of attraction between atoms or ions that occurs when atoms share or transfer valence
    electrons.


Explore More


Watch the video about covalent bonds at the following URL, and then answer the questions below.


http://www.youtube.com/watch?v=Ynz5Dhb-WBM


MEDIA


Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/79971


  1. Which types of elements can form covalent bonds?

  2. How can you tell the number of covalent bonds an element can form?

  3. Why does one atom of nitrogen form bonds with three atoms of hydrogen?


Review



  1. What is a chemical bond?

  2. Explain why hydrogen and oxygen atoms are more stable when they form bonds in a water molecule.

  3. How do ionic bonds and covalent bonds differ?

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