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Covalent bonds

Covalent bonds

Author: Michele Langhans

Here are your notes about covalent bonds.

Be sure to watch and take notes.

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Covalent Bonds- Part 1

This is Part 1 of 2.

Source: Langhans and various educators

Covalent Bonds- Part 2

Here is Part 2 of 2

Source: Langhans and various educators

Covalent Bonds: These are the “S” in WSQ. You must have them under your video notes completed by the due date on the Unit Plan.

Part 1: Draw the following Lewis Dot Structures (remember to use the valence electrons)


Part 2: This part is harder. Follow the following rules:

Guidelines for Drawing Lewis Dot Structures for Molecules:
1. The octet rule1 says that atoms “try” to have 8 valence electrons by sharing or transferring
electrons to form compounds. Hydrogen only has 2 electrons in its “octet”.
2. Put the atom which can share the most electrons in the middle.
3. Some atoms can share two or three pairs of electrons (usually it is either C, N, or O)
4. put the hydrogen atoms on last
5. hydrogen NEVER shares two pairs of electrons.
6. fluorine NEVER shares two pairs of electrons.
7. fluorine ALWAYS obeys the octet rule.
8. Any structure which obeys the octet rule (and makes chemical sense) is more 'correct' than any
structure that violates the octet rule.


Part 3: Onto Naming and formula writing:

Write the name of each of the following compounds.

1.  HF                                                                                                   1.  ______________________


2.  H2S                                                                                                  2.  ______________________


3.  NO                                                                                                   3.  ______________________


4.  N2O                                                                                                  4.  ______________________


5.  NO2                                                                                                  5.  ______________________


6.  N2O5                                                                                     6.  ______________________


7.  SO2                                                                                       7.  ______________________


8.  CBr4                                                                                      8.  ______________________


9.  C2H6                                                                                     9.  ______________________


10.  C4H10                                                                                 10.  ______________________


Write the chemical formula for each of the given names.

11.  nitrogen triiodide                                                                             11.  ______________________


12.  dinitrogen tetroxide                                                                         12.  ______________________


13.  sulfur trioxide                                                                                 13.  ______________________


14.  carbon monoxide                                                                            14.  ______________________


15.  dihydrogen monoxide                                                                     15.  ______________________


16.  hydrogen monobromide                                                                  16.  ______________________


17.  phosphorus trichloride                                                                    17.  ______________________


18.  tricarbon octahydride                                                                      18.  ______________________


19.  carbon tetrahydride                                                                         19.  ______________________


20.  dicarbon tetrahydride                                                                      20.  ______________________


Source: Langhans and various educators

HOT Question

Question about your Notes: write your question following the guidelines below:

Question- asking Higher Order Thinking (HOT) questions; use the following as your guide:
1. A question that you are still confused about (be specific, include which part of the video, etc)
2. A question that connects the videos together (i.e. asking about the relationship between the content)
3. A question you think you know the answer to, but you want to challenge your classmates with
Use your Unit Plan to help with question starters

Source: inspired by C. Kirch