Module 4

Module 4: Balancing Chemical Equations


Welcome to Module 4.  Remember, you may work at your own pace. All assignments for this module will be due (one week from the first day of the class). This module covers the basics of balancing chemical equations. When chemical reactions happen, matter is neither created, nor destroyed. It is just rearranged. It is important to understand the basics of balancing chemical reactions. This module will feature multimedia presentations and a forum discussion.  Make sure that each assignment is completed and turned in one week from the first day of the trimester. Look at the calendar for the exact due dates.

After completing those assignments, you will take a formative quiz in class. After turning in your formative quiz, you will receive feedback and will be advised to either move ahead or redo the module. Remember, the earlier you complete a module, the earlier you will be able take the formative quiz and receive feedback.


View the media below and answer the questions that follow. An answer document will need to be retrieved:



Part 1



I Can Statements
- I can demonstrate the law of conservation of matter by balancing chemical equations.




1. What is subscript? What does it tell us?

2. If you see NH
4, how many atoms of Nitrogen make up the molecule? How many atoms of Hydrogen?

3. What is a coefficient? What does it tell us?

4. If you saw 3H2O , how many water molecules would there be? How many atoms of hydrogen make up each molecule? How many atoms of oxygen make up each molecule?

5. Is the following chemical equation balanced? Why or why not?
C + O --> CO2

6. Is the following chemical equation balanced? Why or why not?
2Mg + Cl2 --> 2MgCl

7. Write the balanced chemical equation for the reaction between CH4 and O2

Below is another video (broken into 2 parts) that goes step-by-step through balancing chemical equations. If you feel you need more help, check out the videos below.






8. Go to this link and take their balancing chemical equations quiz. Be sure to read the directions first. Don't leave any space blank (put a 1 if there is only supposed to be 1 molecule).

Record all your final balanced chemical equations.


Part 2
On the left, there is a link for a forum discussion. Go there and respond to the posted topic.



Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 Unported License.
Original copyright: ©2012 Daniel McIlhenney