Posted: March 11th, 2023

chemistry #8

due by 02/27/2023 Monday

Module 8 Discussion, Chapter 14

This week we are learning about the details & chemical reactions of the inexpensive flashlight batteries.  The products of the reaction in this simple battery cannot easily be converted back to their original form…and for this reason, this technology is best used in a throwaway battery– one that cannot be recharged.  Batteries of this type are called primary batteries, and are not eco-friendly.

Excerpt from Chemistry in Focus.  By Tro.  Excerpt from Oxdiation-Reduction Reactions; Batteries.  By Joesten, Castellion & Hogg.

Discussion Questions:

Who knew battery problems can make big news, too? The new Boeing 787 Dreamliner is not so dreamy after all.  Check out the following web links:

· What you need to know about the Boeing Dreamliner.

https://money.cnn.com/2013/01/17/news/companies/boeing-dreamliner-faq/index.html?iid=HP_Highlight

· The official Boeing 787 Dreamliner webpage.

http://787updates.newairplane.com/787-Electrical-Systems/Batteries-and-Advanced-Airplanes

· Dreamliner rival ditches controversial batteries.

https://money.cnn.com/2013/02/15/news/airbus-dreamliner-battery/

·  

In the last article, two different types of batteries were mentioned. Do more research and answer the following:

1. What is a lithium-ion battery?

2. What is a nickel-cadmium battery?

3. Why do you think Boeing picked the lithium-ion battery? Put yourself in the place of a Boeing engineer, what are the risks vs. benefits of using this type of battery?

4. Obviously, the Boeing engineer selected the lithium-ion battery based on their risk assessment….. In your opinion, do you feel they made the right decision? Explain.

Module 8 Assignment: (Pages 374-376) Complete only the numbers listed below, and submit your answers here by Tuesday, 11:55PM

· Exercise Questions: 1, 6, 21, 22

· Problems: 23, 25, 27, 29, 35, 41

· Feature Problems and Projects: 49