1. Dr. Vinu Johnson, Ph.D. Chemistry Faculty
Preparing for ACS Exam General Chemistry -1 (1411) Part -2 (Chapters 5 to 7)
Dr. Vinu Johnson, Ph.D.
Chemistry Faculty

2. What I will talk about this morning:
Overview of ACS exam strategies discussed in Part-1.
Review of concepts from Chapters 5 to 7
Credit: Quotesgram.com

3. Exam Details: 70 Questions with four answer choices
110 minutes = 1.57 minutes per question !
Serial number
Sign Check-in form at the beginning of the exam.
Sign Check-out form at the end of the exam.
DO NOT MARK OR WRITE ON THE EXAM BOOKLET. THERE WILL BE A PENALTY IF YOU DO SO !!!

4. Exam giving strategies:
You will face 3 categories of questions:
Certain
50/50
Clueless
Make these 3 categories on a scratch paper
Read the question carefully – Time Management.
Based on your confidence write that Q# in one of the three categories. If it is a “certain” answer, mark it on the scantron form. If not, skip the question.

5. Exam giving strategies:
Scantron form:
Use a good condition form.
Check the Question number.
Mark the box completely
Erase completely if selecting another answer choice. √

6. Exam Preparation:
Every Chapter has a Summary section at the end of the textbook– look at it.
Start from first chapter – look at your notes.
Refer to the review slides for what you should know from each chapter.
Work out at least one example of that topic.
Practice giving tests.

7. Exam Preparation: On the day of Exam:
Relax - STRESS is a Memory Buster !
Psych yourself up – be CONFIDENT.
Close your eyes and revise the concepts.
Leave early (consider any traffic delays)
Be sure to bring a scantron form, calculator & pencil.
Be sure to have snacked / cup of coffee to keep your energy level up.
Do breathing exercise if you feel anxious.
National Education Association (nea.org)

8. Review of Concepts

9. Part-1
Introduction
Chapter 1
Chapter 2
Chapter 3
Chapter 4

10. 3 – 4 Questions Define bond dissociation energy, D.
CHAPTER 4
COVALENT BONDS
3 – 4 Questions
Define bond dissociation energy, D.
From a list of compounds, predict which are ionic and which are molecular.
Relate electronegativity to electron affinity and ionization energy.
Write electron-dot symbols for atoms, and tell how many electrons must be shared to enable the atom to achieve a completed valence shell. Give the symbol of the noble gas with the same number of valence electrons.
Draw electron-dot structures for polyatomic molecules and ions, recognizing when multiple bonding is needed.
Resonance structure, formal charge .

11. CHAPTER 5
MOLECULAR SHAPES
5 – 6 Questions
VSEPR model to predict the geometries of molecules and polyatomic ions.
Hybridization: sp3 hybrid orbitals vs sp2 hybrid orbitals vs sp hybrid orbitals.

12. MASS RELATIONSHIPS IN CHEMICAL REACTIONS
CHAPTER 6
MASS RELATIONSHIPS IN CHEMICAL REACTIONS
6 – 8 Questions
For simple chemical reactions, write and balance chemical equations.
formula of a compound
Calculate molar mass.
Interconvert grams, moles, and numbers of formula units.
Determine the number of moles and grams of one reactant needed to react with a given number of moles and grams of another reactant and the number of moles and grams of product(s) that result from the reaction.
Calculate percent yield.
Identify the limiting and excess reagents in a reaction mixture.
how to prepare a solution of known molarity by dissolving a solid in a solvent.
how to prepare a solution of known molarity by diluting a more concentrated solution.
Interconvert solution molarity, solution volume, solute moles, and solute grams
Determine the percent composition and empirical formula of a compound

13. REACTIONS IN AQUEOUS SOLUTION
CHAPTER 7
REACTIONS IN AQUEOUS SOLUTION
7 – 9 Questions
Classify reactions as precipitation, acid-base neutralization, or redox.
Classify substances as strong electrolytes, weak electrolytes, or nonelectrolytes
Write molecular, ionic, and net ionic equations for precipitation, acid-base, and redox reactions
Use solubility guidelines to determine whether a compound is likely to be soluble in water.
solubility guidelines to predict the product of a precipitation reaction.
Identify the common strong acids and strong bases.
Assign oxidation numbers to each atom in a chemical species.
Use the activity series to predict whether a redox reaction will occur.

14. ACS Final Exam Review: Part -3 Thursday, December 8th, 9:45 am C135ABC