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Unformatted text preview: charges repel one another. – Objects w/ unlike charges attract one another. • Know the names and element symbols for elements #1‐20 on the Periodic Table. – Given the element symbol, name the element, or vice versa. Spelling counts! • Know definitions of isotope, atomic number, mass number, atomic mass • Know the atomic mass reported on the Periodic Table is the weighted average of all naturally occurring isotopes for that element. • Calculate the atomic mass of an element given the percent natural abundance and atomic masses of its naturally occurring isotopes (to the correct number of sig figs and decimal places). • Use the Periodic Table to identify the most abundant isotope of any element given its
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This document was uploaded on 03/22/2014 for the course CHEM 139 at Seattle Central Community College.
- Fall '