Download Exam 2 Study Guide - Preparatory Chemistry | CH 111 and more Study notes Chemistry in PDF only on Docsity! Exam 2 Review Sheet What You Must Bring -‐ Pencils and eraser -‐ Calculator (you will not be allowed to use your phone and I don’t have extra calculators) -‐ Picture ID General Comments The exam will contain 30-‐35 multiple-‐choice problems. You will be provided with a periodic table with symbols as well as full names of elements. It is fairly impossible to completely de-‐couple information from Ch 1-‐5 from material being tested on this exam. For example you are still expected to know the terms and labels used in the periodic table and SI unit conversions. Therefore do not assume you can forget what we did before Ch6. Preparation You should prepare by working out all of the problems we did in class, Sapling and suggested end-‐of-‐chapter problems. You should focus on understanding specific language and symbols used as well as developing a strategy for word problems. As a final check of your knowledge you should select 25-‐30 problems from your text/Sapling/lecture and give yourself ~45 min to work them out without the use of your book or notes. Putting yourself under test-‐taking conditions will give you a better idea of what topics you are comfortable with and what topics you may need more practice with. Chapter 6 - Avogadro’s number: what it represents and its value and units (you will not be provided with this value) - Molar mass (obtained from periodic table, has units of g/mol) - Conversions between moles and number of particles (atoms, molecules, ions, etc.) - Conversions between grams and moles - Using mole/mole ratios from formula as conversion factor - Combined problems with both gàmolà# and mole/mole ratios - Mass percent from formula (equation not provided) - Empirical formula from mass percent or experimental data (equation not provided) - Molecular formula from empirical formula and molar mass (equation not provided)
