NAME:______Per.______

Chemical Bonding Webquest

So, what makes atoms so willing to form bonds with each other? Well what it really comes down to is the idea that nature is neutral. Atoms coexist with each other in stable atmospheres. When the atom becomes electrically charged, a bond forms to create a stable and happy molecule. Depending on the electronegativity of each atom, the bond that is created can be stronger or weaker. Covalent bonds are the strongest bond and ionic are the weakest of the bonds. Like personal relationships the strength of the bond is based on the giving, sharing, or taking that occurs between the individuals. The more sharing, the more strength.

Answer the following questions. Go to different websites to find the answers.

1. What is a bond?

2. Why do elements combine?

3. What holds molecules together?

4. What do you need for a bond to occur?

5. What are 3 types of bonds?

6. What do the dots represent on a Lewis dot structure? How do you know how many dots there are for each element?

7. How many electrons are needed to satisfy the Octet Rule? Are there any exceptions?

Go to:

8. How can you predict the type of bond likely to be found in any given substance?

9. Identify the following bonds as nonpolar covalent, ionic, or polar covalent:

a. H-H b. K-Cl

c. H2-O d. C-O2

IONIC BONDS Go to:

  1. Describe what happens when two negatively charged particles interact with one another. (you can draw a diagram to help illustrate your ideas)
  1. When will oppositely charged atoms stick together?
  1. A. What is an ion? (Look this up online)

B. What is a cation and where can you find it on the periodic table?

C. What is an anion and where can you find it on the periodic table?

  1. Take a look at the ionic bond formed between Sodium and Chlorine atoms.
  1. Draw each atom below as it looks like in NaCl on the website.
  1. Label the Na and Cl as either + or -. And label each as either Cation or Anion.
  1. Describe how ionic compounds form crystals:

COVALENT BONDS Go to:

  1. If an atom, such as hydrogen, is able to form a covalent bond, describe what happens when the electron shells of two atoms overlap:
  1. What happens when the two atoms are fairly close?
  1. What happens when the two atoms are TOO close?
  1. What does the nucleus of an atom want to do to its own electrons?
  1. What does the nucleus of one atom want to do to the electrons of a nearby atom?
  1. Are the atoms really “sharing” electrons?
  1. What type of atoms form covalent bonds?
  1. Draw a graph showing the change in potential energy when atoms form covalent bonds.
  1. What happens to the stability of atoms when they form covalent bonds?
  1. A line can be used to represent a covalent bond between two atoms. Diagram pairs of atoms that can form single, double, and triple bonds.
  1. Can every atom form each of these kinds of bonds?

Other Bonds

  1. What are metallic bonds?
  1. What are hydrogen bonds?