Electronegativity Samenvattingen, Aantekeningen en Examens
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IB Chemistry SL: Topic 4 Latest Version Graded A
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IB Chemistry SL: Topic 4 Latest Version 
 
Graded A 
 
Ionic Bond Electrostatic attraction between oppositely charged ions 
 
Covalent Bond Electrostatic attraction between a pair of electrons and positively charged 
nuclei, formed as a result of electron sharing 
 
Metallic Bond Electrostatic attraction between a lattice of positive ions and delocalized 
electrons 
 
Polyatomic ions ions with more than one element 
 
e.g. CaCO3, Al(OH)3, Mg(NO3)2, (NH4)2SO4, Ba3PO4, LiHCO3 
 
Lattice ions arran...
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CHEM 103 FINAL EXAM QUESTIONS & ANSWERS VERIFIED 100% CORRECT
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Lewis Structures - represents the transfer or the sharing of electrons in chemical bonds 
octet rule - EVERY ATOM WANTS 8 ELECTRONS IN THEIR OUTERSHELL 
ionic bonding - chemical bond formed through the transfer of one or more electrons from one 
atom or group of atoms to another group 
EX : NaBr 
metals - give 
nonmetals - take 
oxidation number - the superscript indicating the charge on an ion 
ion - atom with either positive or negative charge 
binary compound - compounds in which 2 elements a...
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Electronegativity and polarity (OCR A level chemistry) Practice Exam Questions And Answers Already Passed 100%.
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Electronegativity - correct answer The attraction of a bonded atom for a pair of electrons in a covalent bond. 
 
What affects electronegativity? - correct answer Nuclear charge, atom size, how close the shared pair of electrons are to each nucleus. The shared pair of electrons in the covalent bond may now experience more attraction from one of the bonded atoms than the other. 
 
How is electronegativity measured? - correc...
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shapes of covalent bonds and electronegativity
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BioChem 210 Module 2 Exam - Portage Learning
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BioChem 210 Module 2 Exam - Portage 
Learning 
1. The pH of a solution of 0.0010 M NaOH is:: 11 (Kw=[H+][OH-] = 
1.0 x 10-14; 
[H+][0.0010] = 1.0 x 10-14 [H+]=1.0 x 10-11; pH=-log[1.0 x 10- 
11]=11) 
2. Water is a unique molecule. Which of the following 
contributes to water's unique place in the chemical world?: 
All of the answers are correct 
3. The bent shape of water is due to ______________.: The 
unshared electron pairs on the oxygen atom 
4. Which diagrams correctly represent ...
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CEM 142 MSU Final Exam Questions and Answers Already Passed
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CEM 142 MSU Final Exam Questions and 
 
Answers Already Passed 
 
Does aqueous sugar conduct electricity, why or why not 
No, because there are no ions 
Does aqueous NaCl conduct electricity? 
Yes, because this is an ionic compound (metal/nonmetal) 
What is the only IMF present in non polar molecules 
London Dispersion Forces 
How does electronegativity change in the periodic table 
Electronegativity increases from left to right (with the right being most electronegative), and 
increases from bo...
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TBR OCHEM EXAM QUESTIONS & ANSWERS 2024
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TBR OCHEM EXAM QUESTIONS & ANSWERS 2024 
 
 
*Ch1 Molecular Structure* - ANSWER-*Reviewed on 020518*. I'd review this chapter again until you're comfortable with the content, understand not memorize. 
 
Carboxylic acid example 
CO2H - ANSWER-H3CCH2Ch2*CO2H* 
*-ic acid* 
 
Aldehyde example 
CHO - ANSWER-H3CCH2Ch2*CHO* 
 
Forces holding organic tails of micelle are VDW - ANSWER-Micelle needs 
1. Polar head 
2. Alkyl tail 
 
Ionic vs. covalent bonds - ANSWER-Ionic: complete transfer of electrons ...
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Portage Learning CHEM 210 Module 2 Exam Questions With Answers Latest Updated 2024- 2025 (Graded A+)
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Portage Learning CHEM 210 Module 2 Exam Questions With Answers Latest Updated (Graded A+) Which attribute contributes to water’s unusual properties? 
The geometry of the molecule 
The polarity of the O-H bonds 
Question 3 
The ability of water molecules to hydrogen bond 
The bond angle of water 
All of the answers are correct 
Question 4 
What factor contributes to the bent shape of a water molecule? 
The dipole arrows in a water molecule 
The unshared electron pairs on the oxygen atom 
The e...
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CHEM 210 Exam 2 2022/ 2023 (UPDATED)
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1. The pH of a solution of 0.0010 M NaOH is: 
A. 1 
B. 11 
C. 8 
D. 0 
E. 14 
2. Water is a unique molecule which of the following contributes to water’s unique 
place in chemical world? 
The geometry of the molecule 
- The polarity of the O-H bonds 
- The ability of water molecules to hydrogen bond 
- The bond angle of water 
- All answers are correct 
3. The bent shape of water is due to 
- The dipole arrows in a water molecule 
- The electronegativity different between hydrogen and oxygen 
...
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TESTBANLK FOR ORGANIC CHEMISTRY 12th EDITION BY SOLOMONS | Questions with 100% Correct Answers |GRADED A+ | Latest Update | 2023/2024.
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TESTBANLK FOR ORGANIC 
CHEMISTRY 12th EDITION BY 
SOLOMONS | Questions with 
100% Correct Answers |GRADED 
A+ | Latest Update | 2023/2024. 
Question type: Multiple choice 
1) Which of the following best describes the origin of carbon atoms? 
a) The Big Bang 
b) amino acids found on meteorites 
c) byproduct of chemical fusion in stars 
d) gradual decay of radioactive isotopes of nitrogen 
e) All of these choices. 
Answer: C 
Topic: General 
Section: 1.1 
Difficulty Level: Easy 
2) Credit for the ...
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