Hydrogen bonding forces - Study guides, Class notes & Summaries
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Edexcel iGCSE Chemistry, question and answer with rated solution
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Edexcel iGCSE Chemistry, question and answer with rated solution 
Experiment for Diffusion? 
1) HCl placed at one end of the test tube, ammonia solution at the other. 
2) Where they meet, a ring of Ammonium Chloride appears. 
3) The diagram shows that the ammonia is closer to the ring, showing that ammonia must have travelled faster, showing it's a lighter gas. 
 
 
 
Experiment for Dilution? 
1) Put a coloured substance in a solvent e.g food colouring in water. 
2) Over the time, the colour le...
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BS161 2024 Updated Exam
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BS161 2024 Updated Exam 
 
What type of bond occurs between molecules? - ANSWER Covalent bond 
 
Blank unwinds DNA - ANSWER Helicase 
 
DNA polymerase can only add nucleotides to the 3' end of an blank strand - ANSWER Existing 
 
What forces occur between molecules? - ANSWER Ionic, hydrogen, hydrophobic clustering and london dispersion forces 
 
Covalent bonds involve To fill outer electron shells - ANSWER Sharing of electrons. 
 
What is the goal of covalent bonding? - ANSW...
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BTEC Applied Science Unit 1 Chemistry - Distinction.
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BTEC Applied Science Unit 1 Chemistry - Distinction. How many electrons can an s subshell hold? correct answer2 
How many electrons can a p subshell hold? correct answer6 
How many electrons can a d subshell hold? correct answer10 
Which subshells are available in the first energy level? correct answers 
Which subshells are available in the second energy level? correct answers and p 
Which subshells are available in the third energy level? correct answers, p and d 
What is Hund's rule? correct ...
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Semmelweis Entrance Exam Questions and Answers Already Passed
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Semmelweis Entrance Exam Questions 
 
and Answers Already Passed 
 
Electron configuration for cations Subtract 1 from exponent of highest n-value orbital (ex. 
remove from 4s before 3d) 
 
Ag+ = [Kr]5s^1 4d^9 
 
Electron configuration for anions Add 1 to closest orbital 
 
Cl- = [Ne]3s^2 3p^6 
 
Atomic orbitals s, p, d, f 
 
Primary vs secondary structures of proteins Primary - AA chain (linked by peptide bonds) 
 
Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets) 
 
Mo...
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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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GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY PAPER 2 2024 QUESTION PAPER WITH QUESTIONS AND CORRCT ANSWERS GRADED A+
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GCSE EDEXCEL TRIPLE 
SCIENCE CHEMISTRY PAPER 2 
2024 QUESTION PAPER WITH 
QUESTIONS AND CORRCT 
ANSWERS GRADED A+ 
What is in the nucleus? - CORRECT ANSWER-Protons and neutrons 
What is relative atomic mass? - CORRECT ANSWER-Relative atomic 
mass is an average mass taking into account the different masses 
and abundances of all the isotopes that make up the element 
How do you calculate the relative atomic mass? - CORRECT 
ANSWER-Sum of (isotope abundance x isotope mass number) / 
sum of abundan...
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Chem 210, Exam 5 (Final), Patell Questions & Answers(RATED A)
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What is the difference in the properties of a solid, liquid, or gas reflect the strengths of the attractive forces between the molecules that make up each phase? - ANSWERintermolecular forces 
 
What are the examples of intermolecular forces? - ANSWERdispersion, dipole-dipole, hydrogen bonding 
 
Dipole-dipole interactions are attractive forces that act between ______ molecules. - ANSWERpolar 
 
Polar molecules have permanent dipoles. The positive end of one permanent dipole is attracted to the ...
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MCAT Organic Chemistry Exam Questions and Answers
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MCAT Organic Chemistry Exam Questions and Answers 
Instantaneous Dipole Moment - Answer-Exists in an otherwise nonpolar molecule. Occurs because the electrons in a bond move about the orbital and at any moment may not be distributed exactly between the two bonding atoms, even when the atoms are identical. 
 
London Dispersion Forces - Answer-Occur between two instantaneous dipoles; the weakest dipole-dipole force (vs. hydrogen bonds which are the strongest dipole-dipole forces). 
 
Wolff-Kishner...
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CH 222 Test Bank Biochemistry Test 1 - Centennial College
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The dipole moment in a water molecule Which statement about hydrogen bonds is NOT 
true? 
A) Hydrogen bonds account for the anomalously high boiling point of water. 
B) In liquid water, the average water molecule forms hydrogen bonds with three to 
four other water molecules. 
C) Individual hydrogen bonds are much weaker than covalent bonds. 
D) Individual hydrogen bonds in liquid water exist for many seconds and sometimes 
for minutes. 
E) The strength of a hydrogen bond depends on the linearit...
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Test Bank for Chemical Principles, 8th Edition by Peter Atkins
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Test Bank for Chemical Principles: The Quest for Insight 8e 8th Edition by Peter Atkins; Loretta Jones; Leroy Laverman; Kelley Young; James Patterson. Full Chapters are included (Focus 1 to Focus 10 are included) 
 
Focus 1: Atoms 
1A Investigating atoms 
1B Quantum theory 
1C Wavefunctions and energy levels 
1D The hydrogen atom 
1E Many-electron atoms 
1F Periodicity 
 
Focus 2: Bonds Between Atoms 
2A Ionic bonding 
2B Covalent bonding 
2C Beyond the octet rule 
2D The properties of bonds 
2...
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