Chem 105a Exam 1 Study Guide
Chem 105a Exam 1 Study Guide CHEM 105A
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This 2 page Study Guide was uploaded by Emma Morrissey on Wednesday September 14, 2016. The Study Guide belongs to CHEM 105A at University of Southern California taught by Thomas Michael Bertolini in Fall 2016. Since its upload, it has received 16 views. For similar materials see General Chemistry in Chemistry at University of Southern California.
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Date Created: 09/14/16
Chapters 1, 2, 3 ● Significant Figures ○ Calculating using sig fig rules ● Elements and the ions they form ○ Know the element names and symbols for Hydrogen through Xenon ○ Know the groups and the ions formed by each ■ Some metals with variable ionic charges ● Copper (I & II) ● Gold (I & III) ● Cadmium (I & II) ● Lead (II & IV) ● Mercury (I & II) ● Iron (II & III) ● Chromium (II & III) ● Manganese (II, III, & IV) ● Tin (II & IV) ● Polyatomic Ions ○ Memorize the names, symbols, and charges ● Unit Conversion ○ Remember to convert units as well as the given values ○ Significant figures ● Physical Vs Chemical Changes ○ Physical: change in state ○ Chemical: change in chemical makeup ● Reading burets, graduated cylinders, graduated pipets ○ Remember that burets measure how much liquid has left the buret ● Volume calculation ○ Remember units ● Density calculation ● Reading Element symbols ○ Protons (atomic number) ○ Neutrons (mass number) ○ Electrons ○ Net charges ● Calculating atomic mass using masses and abundance percentages of isotopes ● Mass to moles/ moles to mass conversions ● Naming compounds ○ Binary ionic ○ Binary covalent ○ Acids ● Percent composition ○ Computing the percent of each element within a compound given the molar mass and molecular or empirical formula ● Empirical vs Molecular formulas ○ Empirical formulas are essentially “reduced” molecular formulas ● Determining empirical and molecular formulas ○ Computing ratios based on given information ● Writing and balancing chemical equations ○ The purpose is to satisfy the law of conservation of mass
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