Z isomer Study guides, Revision notes & Summaries
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AQA A-LEVEL CHEMISTRY PAPER 2 QUESTION PAPER JUNE 2020
- Exam (elaborations) • 37 pages • 2023
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AQA A-LEVEL CHEMISTRY PAPER 2 QUESTION PAPER JUNE 2020 
 
 
 
 
 
A-level 
CHEMISTRY 
Paper 2 Organic and Physical Chemistry 
 
Monday 8 June 2020	Afternoon	Time allowed: 2 hours 
Materials 
For this paper you must have: 
•	the Periodic Table/Data Booklet, provided as an insert (enclosed) 
•	a ruler with millimetre measurements 
•	a scientific calculator, which you are expected to use where appropriate. 
 
Instructions 
•	Use black ink or black ball-point pen. 
•	Fill in the boxes at...
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Test Bank For Fundamentals of Organic Chemistry 7th Edition By John E. McMurry -
- Exam (elaborations) • 238 pages • 2023
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Chapter 1-Structure and Bonding:Acids and Bases 
1. How many total valence electrons are represented in the following electron configuration? 1s22s22px2 2py2 2pz1 or 1s22s22p5 
a. 1 b. 3 c. 5 d. 7 e. 9 
ANS: D 
Instructions: Write valid Lewis (electron-dot) structures for each formula below. Show all electrons as dots and show all nonbonding electrons. 
2. Write: 
CH3CH2OH ethanol 
ANS: 
3. The structure of urea is shown below. Fill in any nonbonding valence electrons that are missing from the l...
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AQA A Level Chemistry Definitions questions and answers latest top score.
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AQA A Level Chemistry Definitions questions and answers latest top score. 
 
 
 
 
 
 
 
 
 
 
 
 
Relative Atomic Mass - ANS.The weighted mean mass of an atom of an element relative to 1/12 of the mass of one atom of carbon-12 
 
First Ionisation energy - ANS.The energy required to remove an electron from each atom in one mole of gaseous atoms 
 
Acid - ANS.A species that is a proton donor 
 
Activation Energy - ANS.The minimum energy required to start a reaction by the brea...
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AQA A LEVEL Chemistry questions and answers 100% guaranteed success.
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AQA A LEVEL Chemistry questions and answers 100% guaranteed success. 
 
 
 
 
 
 
 
 
 
 
Relative atomic mass - correct answer. The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 
 
Relative molecular mass - correct answer. Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom 
 
The Avogradro constant - correct answer. the number of particles in a mole 
 
ideal gas equation - correct answer. pV = nRT 
 
empirica...
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Unit 3 :CHEM 210 with 100% correct answers
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Bronsted-Lowry Acid 
Must Have a Proton (H) 
 
 
 
Bronsted-Lowry Base 
Must have Lone Pairs or Pi Bonds 
 
 
 
Neutralization 
Strong Acid donates a proton to the Strong Base to generate Water and the Conjugate Base 
 
 
 
Electrophile 
Electron Loving 
An atom that wants electrons. 
An atom that is electron rich. 
Must have a partial positive charge. 
(Cation) 
 
 
 
Nucleophile 
Nucleus Loving 
If opposites attract, then a _________ is electron rich. 
Must have a partial negative charge. 
(An...
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ACS General Chemistry 1 studysheet Exam 124 Questions with Verified Answers,100% CORRECT
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ACS General Chemistry 1 studysheet Exam 124 Questions with Verified Answers 
 
56=Mass # (A) 
26= Atomic # (Z) 
Fe= symbol - CORRECT ANSWER 56= 
26= 
Fe= 
 
Mass Number - CORRECT ANSWER Proton+ Neutrons 
 
Atomic Number - CORRECT ANSWER # of protons/electrons (equal in elemental form) 
 
- superscript - CORRECT ANSWER Add e- 
 
+ superscript - CORRECT ANSWER subtract e- 
 
Isotope - CORRECT ANSWER Diff number of neutrons 
 
Isomer - CORRECT ANSWER two or more compounds with the same # of elemen...
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OCR A-Level Chemistry Paper 2 2022 ALL ANSWERS 100% CORRECT GUARANTEED GRADE A+
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What is an alkene and its general formula? 
It is an unsaturated hydrocarbon with a least one C=C bond. General formula is CnH2n 
What is a sigma bond? σ 
single covalent bond formed when two s orbitals overlap. High electron density 
What is a pi bond? 
sideways overlap of p orbitals that occur in a double or triple bond. Much weaker than sigma, low bond enthalpy and lower electrostatic attraction 
Is an alkane or an alkene more reactive? 
Alkene. contains both sigma and pi bonds with high ele...
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Chem 210 Exam II with complete solutions already graded A+
- Exam (elaborations) • 6 pages • 2023
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electrophiles 
electron seeking reagents that have room to accept a electron pair 
 
 
 
nucleophiles 
reagents seeking a nucleus to which to donate a pair of electrons 
 
 
 
proton transfer or protonation reaction 
the transfer of a proton from one base to another 
 
 
 
transition state 
lying between the products and reactants 
 
 
 
free energy of activation (delta G double dagger) 
the height of the barrier, the energy that the reactants attain in reaching the the transition state 
 
 
 
e...
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Solution Manual for Organic Chemistry Mechanistic Patterns Canadian 1st Edition by Ogilvie Ackroyd Br
- Exam (elaborations) • 811 pages • 2024
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Chapter 1 Carbon and Its Compounds CHECKPOINT PROBLEMS Practice Problem 1.1 a) S — 1s2 2s2 2p6 3s2 3p4 b) Cl — 1s2 2s2 2p6 3s2 3p5 c) Na+ — 1s2 2s2 2p6 1-2 Copyright © 2018 Nelson Education Limited Practice Problem 1.2 a) Count valence electrons. Build a basic bonding framework and account for electrons used. Add remaining electrons and check for formal charges. The molecule has a lone pair on the nitrogen. All other electrons are bonding electrons. b) Count valence electrons. Build a bas...
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CHEM&219 Unit 3 Nomenclature Exam with Correct Solutions
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CHEM&219 Unit 3 Nomenclature Exam with Correct 
Solutions 
What is R/S nomenclature used for? - Answer -Naming each enantiomer of an enantiomer pair of a chiral 
molecule 
What is E/Z nomenclature used for? - Answer -Used for determining and naming the cis- or trans- nature 
of a substituted alkene. 
R/S Nomenclature of Enantiomers - Answer -The system used to name enantiomeric forms of a chiral 
molecule is known as the R/S system or the Cahn-Ingold-Prelog(CIP) system (after its developers). Th...
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