In your opinion, why has the U.S. Mint made their pennies of mostly zinc rather than copper? Copper has antibacterial properties (i.e., it can kill bacteria on contact) Does this explain why so many coins contain at least some copper? Explain your reasoning S. Many doorknobs have some copper alloy (brass, bronze, etc) Why do you think this is?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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ALab-Plating Pennies with Brass x
E Roland Mörris - Melaic BoT
com/document/d/1cVIZ2ubck17bSqR849yICfcdZy9GmJw TeZJ7urbQcs8/edit
The M..
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Classwork
2.3 Eukam
tallic Bonding Lab
t Format Tools Add-ons Help
Last edit was 13 minutes ago
Heading 1
+ BI U A
Russo One
18
Forming the alloy with flame
10. Light the propane burner.
11. To protect yourself, do not clamp down on the penny with too much force. You can watch from
how quickly the pennies will begin to turn color as you form the alloy.
12. Use crucible tongs to heat the penny in the outer portions of the flame. Avoid placing the pem
hottest part of the flame, i.e., directly above the inner cone. Do not overheat your penny as an
develop.
13. Carefully run the penny under water and then you can handle your penny.
a. Even if you want to get rid of your penny in the garbage, you need to cool it under
When finished:
You may prepare other pennies you brought. Continue to exercise caution in the laboratory.
Post Lab Analysis (C.E.R.):
Take a picture of your penny and paste it below:
Transcribed Image Text:ALab-Plating Pennies with Brass x E Roland Mörris - Melaic BoT com/document/d/1cVIZ2ubck17bSqR849yICfcdZy9GmJw TeZJ7urbQcs8/edit The M.. Genetic drift - Wikip. A Algebra Foundatio. GImage result for sur. Classwork 2.3 Eukam tallic Bonding Lab t Format Tools Add-ons Help Last edit was 13 minutes ago Heading 1 + BI U A Russo One 18 Forming the alloy with flame 10. Light the propane burner. 11. To protect yourself, do not clamp down on the penny with too much force. You can watch from how quickly the pennies will begin to turn color as you form the alloy. 12. Use crucible tongs to heat the penny in the outer portions of the flame. Avoid placing the pem hottest part of the flame, i.e., directly above the inner cone. Do not overheat your penny as an develop. 13. Carefully run the penny under water and then you can handle your penny. a. Even if you want to get rid of your penny in the garbage, you need to cool it under When finished: You may prepare other pennies you brought. Continue to exercise caution in the laboratory. Post Lab Analysis (C.E.R.): Take a picture of your penny and paste it below:
In your opinion, why has the U.S. Mint made their pennies of mostly zinc rather than copper?
Copper has antibacterial properties (i.e., it can kill bacteria on contact) Does this explain why so
many coins contain at least some copper? Explain your reasoning
S. Many doorknobs have some copper alloy (brass, bronze, etc) Why do you think this is?
Transcribed Image Text:In your opinion, why has the U.S. Mint made their pennies of mostly zinc rather than copper? Copper has antibacterial properties (i.e., it can kill bacteria on contact) Does this explain why so many coins contain at least some copper? Explain your reasoning S. Many doorknobs have some copper alloy (brass, bronze, etc) Why do you think this is?
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