Voltaic cells - Study guides, Class notes & Summaries
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Chemistry Final Exam (Answered)
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Chemistry Final Exam (Answered) 
 
Oxidation Rules 
Rule 1: The oxidation number of an element in its free state = 0 (Also true for diatomic elements) 
-Mg=0,H2=0, C=0 
 
Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion 
-Mg^2+=+2, Na^+=+1, O^2-=-2 
 
Rule 3: The sum of all oxidation numbers in a neutral compound is zero. The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. 
 
Rule 4: The oxidation numb...
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CHEM 210 Exam 2 Questions with Correct Answers
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CHEM 210 Exam 2 Questions with 
Correct Answers 
 
A reaction in which electrons are transferred from one reactant to another - Answeroxidation-reduction 
Loss of electrons - Answer-Oxidation 
Gain of electrons - Answer-Reduction 
Oxidation takes place at the surface of an electrically conductive material called - 
Answer-anode 
The reduction takes place at another electrically conductive surface called the - Answercathode 
__________ cells use a spontaneous oxidation-reduction reaction to produ...
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CHEM 210 Exam 2 Questions with Correct Answers
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CHEM 210 Exam 2 Questions with 
Correct Answers 
 
A reaction in which electrons are transferred from one reactant to another - Answeroxidation-reduction 
Loss of electrons - Answer-Oxidation 
Gain of electrons - Answer-Reduction 
Oxidation takes place at the surface of an electrically conductive material called - 
Answer-anode 
The reduction takes place at another electrically conductive surface called the - Answercathode 
__________ cells use a spontaneous oxidation-reduction reaction to produ...
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Electrochemistry - SCH4C Actual Exam Questions And Correct Detailed Answers.
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electrochemistry - correct answer study of relationship between chemical reactions and movement of electrons or ions 
 
3 areas of focus in electrochemistry - correct answer 1. chemical reactions that produce a current 
2. chemical reactions that need a current to occur ex. electroplating 
3. controlling reactions that are spontaneous but undesirable (ex. corrosion) 
 
during an electrochemical reaction -...
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Chapter 1 description & Electronics Technician Exam 89 Questions with Verified Answers,100% CORRECT
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Chapter 1 description & Electronics Technician Exam 89 Questions with Verified Answers 
 
Electricity - CORRECT ANSWER Energy due to electric charges at rest or in motion that can be transmitted to produce effects such as heat, light, motion or sound. 
 
Electric Charge - CORRECT ANSWER An electrical property of matter that creates electric and magnetic forces and interactions. 
 
Positive (+) - CORRECT ANSWER An electric field lacking electrons. 
 
Negative (-) - CORRECT ANSWER An electric fiel...
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CHEM 210 Exam Questions and Correct Answers
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CHEM 210 Exam Questions and 
Correct Answers 
 
What is a cathode? - Answer-a negative electrode at which reduction occurs 
What is an anode? - Answer-the positive electrode at which oxidation occurs 
Good way to remember which is which for anode and cathode - Answer-An Ox and a 
Red Cat 
What is the two electrode setup? - Answer-anode and cathode 
What is a galvanic cell? - Answer-A cell in which spontaneous oxidation-reduction 
reactions produce electrical energy (anode and cathode Zn and Cu) ...
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CHEM 210 TEST QUESTIONS 100% SOLUTIONS
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CHEM 210 TEST 
QUESTIONS 100% 
SOLUTIONS 
Which one of the following is not a redox reaction? - ANSWER Al(OH)4-(aq) + 4H+(aq) 
® Al3+(aq) + 4H2O(l) 
Consider the reaction 
CuO(s) + H2(g) ® Cu(s) + H2O(l) 
In this reaction, which substances are the oxidant (oxidizing agent) and reductant 
(reducing agent), respectively? - ANSWER CuO and H2 
When the following redox equation is balanced with smallest whole number coefficients, 
the coefficient for nitrogen dioxide will be _____. 
I2(s) + HN...
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CHEM 210 Exam 2 Questions with Correct Answers
- Exam (elaborations) • 5 pages • 2024
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CHEM 210 Exam 2 Questions with 
Correct Answers 
 
A reaction in which electrons are transferred from one reactant to another - Answeroxidation-reduction 
Loss of electrons - Answer-Oxidation 
Gain of electrons - Answer-Reduction 
Oxidation takes place at the surface of an electrically conductive material called - 
Answer-anode 
The reduction takes place at another electrically conductive surface called the - Answercathode 
__________ cells use a spontaneous oxidation-reduction reaction to produ...
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Portage Chemistry Test 4 Exam Questions With 100% Correct Answers
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Portage Chemistry Test 4 Exam Questions 
With 100% Correct Answers 
Voltaic cell - answergenerate electrical energy through spontaneous chemical reactions 
Electrolytic cells - answeruses electrical energy to drive nonspontaneous chemical reactions 
What electrochemical half-reaction occurs at the anode - answerOxidation 
What electrochemical half-reaction occurs at the cathode - answerReduction 
Why is the lead-acid battery secondary/storage battery - answerBecause it is rechargeable 
Why is th...
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Test Bank For Electricity for The Trades 3rd Edition by
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Electricity for the Trades, 3e (Petruzella) 
Chapter 3 Sources and Characteristics of Electricity 
1) One of the simplest ways to produce static electricity is by friction. 
Answer: TRUE 
Difficulty: 1 Easy 
Learning Objective: Explain how static positive and negative charges are produced. Bloom's: Understand 
Accessibility: Keyboard Navigation 
2) An electrostatic field is represented graphically by magnetic lines of force. 
Answer: FALSE 
Difficulty: 1 Easy 
Learning Objective: Explain how st...
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