Diatomic - Study guides, Class notes & Summaries
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AP Chemistry Final Exam Multiple Choice Questions with Answers
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AP Chemistry Final Exam Multiple Choice Questions with Answers 
Which of the following diatomic species has a bond order of 2? 
Li2 
B2 
N2 
O2 
F2 - Answer>> O2 (O2 has a double bond)
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CEM 141-Exam 1 Questions With Correct Answers Already Passed!!
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Atoms - Matter is made up of 
Atom - The the smallest distinguishable part of an element 
Theories - Can change overtime according to the evidence available 
Electrostatic forces - ALL atoms/molecules attract to one another due to 
Attractions - ________ lower potential energy of a system 
Repulsions - _____ raise potential energy of a system 
The attractive and repulsive forces are EQUAL or the potential energy is at a minimum - Stable 
systems form where 
The well - The most stable part of a g...
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HESI A2 Chemistry Questions with Answers and Explanations UPDATED
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HESI A2 Chemistry Questions with 
Answers and Explanations 
UPDATED 
1. Which of the following substances allows for the fastest diffusion? 
A. gas 
B. solid 
C. liquid 
D. plasma 
Explanation: Diffusion is fastest through gases. The next fastest medium for diffusion is liquid, 
followed by plasma, and then solids. In chemistry, diffusion is defined as the movement of 
matter by the random motions of molecules. In a gas or a liquid, the molecules are in perpetual 
motion. For instance, in a quan...
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Chemistry Final Short Answer Questions 100% Correct!!
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What are the 7 diatomic molecules? - ANSWER H₂, O₂, N₂, Cl₂, Br₂, I₂, F₂ 
 
How many of electrons are shared in a single, double, and triple bond? Give an example of each - ANSWER Single: 2 electrons, H₂ 
Double: 4 electrons, O₂ 
Triple: 6 electrons, N₂ 
 
Compare and contrast sigma and pi bonds. What overlaps and how to form each of the bonds? Please be detailed and include the hybrid vs. non-hybrid orbitals. - ANSWER Sigma bonds are single bonds, they are formed from a ...
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SAMPLE CHEMISTRY PLACEMENT EXAM QUESTIONS WITH COMPLETE SOLUTIONS 100% 2023/2024
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SAMPLE CHEMISTRY PLACEMENT EXAM QUESTIONS WITH COMPLETE SOLUTIONS 100% 2023/2024 
Answer: Oxygen 
Aluminum forms a +3 ion. In order for the formula unit Al₂X₃ to be electrically neutral, the element X must form a -2 ion. Nonmetals in the oxygen column do this. Of these elements, only oxygen is a diatomic gas. 
Aluminum reacts with element X to form a compound with the formula A₂X₃. Element X exists as diatomic molecules, X₂, in the gaseous state at normal temperature and pressure. Elem...
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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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Sample Chemistry Placement Exam Questions and Answers 2024/2025
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Sample Chemistry Placement Exam Questions and Answers 2024/2025 
 
 
Answer: Oxygen 
Aluminum forms a +3 ion. In order for the formula unit Al₂X₃ to be electrically neutral, the element X must form a -2 ion. Nonmetals in the oxygen column do this. Of these elements, only oxygen is a diatomic gas. 
Aluminum reacts with element X to form a compound with the formula A₂X₃. Element X exists as diatomic molecules, X₂, in the gaseous state at normal temperature and pressure. Element 
X must b...
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Chemistry 101 Final Ivy Tech Exam Questions With Correct Answers
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Chemistry 101 Final Ivy Tech Exam Questions With Correct Answers 
Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The balanced chemical equation is: 
 
O2 + Mg ⟶ 2 MgO 
 
If 4 moles of magnesium totally reacted with more than enough O2, how many moles of MgO would be expected to form? 
 
A. 8 Moles 
B. 2 Moles 
C. 4 Moles 
D. 1 Mole 
E. Not Enough Info - Answer C 
 
Which of the following is TRUE? 
 
A. Stoichiometry allows prediction of how much of the reacta...
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Cambridge IGCSE Chemistry UPDATED Exam Questions and CORRECT Answers
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Alkali metals - Elements in the first group of the periodic table; very reactive with 
group 7 elements; reactivity increases going down the group 
Halogens - Elements in the seventh group of the periodic table; diatomic elements; very 
reactive with group one elements; reactivity increases going up the group 
Sublimation - A change directly from the solid to the gaseous state without becoming 
liquid 
Deposition - Change from a gaseous state directly to a solid 
Element - A pure substance ma...
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Chemistry 101 Final Ivy Tech Questions With Complete Solution | 2024
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Chemistry 101 Final Ivy Tech Questions With Complete 
Solution | 2024 
Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The 
balanced chemical equation is: 
O2 + Mg ⟶ 2 MgO 
If 4 moles of magnesium totally reacted with more than enough O2, how many moles of 
MgO would be expected to form? 
A. 8 Moles 
B. 2 Moles 
C. 4 Moles 
D. 1 Mole 
E. Not Enough Info - - C 
Which of the following is TRUE? 
A. Stoichiometry allows prediction of how much of the reactants are ne...
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