4. Why do they put magnesium rods in a steel hot water heater? (Hint: Think about galvanized steel.)

Chemistry
10th Edition
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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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2. Why does grapefruit juice left in an open can taste metallic?
3. If nerves respond to electrical currents, why do you think putting aluminum foil
on an amalgam (gray) filled tooth hurts? Dental amalgam is a mixture of Ag,
Sn, and Hg.
4. Why do they put magnesium rods in a steel hot water heater? (Hint: Think
about galvanized steel.)
5. If pipes feeding a water fountain were made of copper with lead solder at
the junctions, which metal dissolves more readily? Explain.
6. Tarnished silver can be restored by contact with magnesium in a salt solution.
In this reaction, the tarnished silver is reduced. What is oxidized?
Transcribed Image Text:2. Why does grapefruit juice left in an open can taste metallic? 3. If nerves respond to electrical currents, why do you think putting aluminum foil on an amalgam (gray) filled tooth hurts? Dental amalgam is a mixture of Ag, Sn, and Hg. 4. Why do they put magnesium rods in a steel hot water heater? (Hint: Think about galvanized steel.) 5. If pipes feeding a water fountain were made of copper with lead solder at the junctions, which metal dissolves more readily? Explain. 6. Tarnished silver can be restored by contact with magnesium in a salt solution. In this reaction, the tarnished silver is reduced. What is oxidized?
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