CHM 111 Study Guide - Fall 2018, Comprehensive Midterm Notes - Microsoft Powerpoint, Symbol (Chemistry), Empirical Formula

• School: University of Miami
• Department: Chemistry
• Course: CHM 111
• Professor: Amy Scott

Document Summary

Chapter 3: molecules, compounds, and chemical equations (cont. ) Can be only nonmetals or a nonmetal with a metalloid. Prefixes must be used if multiple compounds can be formed from the same elements. When naming, the second element has to end with -ide. Examples: acetone (c3h6o), carbon monoxide (co), nitrogen trifluoride (nf3) Transitional metals with different charge states have the charge indicated with roman numerals. Example: fecl2 -> iron(ii) chloride or cr2s3 -> chromium(iii) sulfide. It is the sum of atomic mass in a molecule. Key reference equation: (molar mass) amu = (molar mass) g/mol. Chapter 3 (reviewed)/ chapter 4: chemical quantities and aqueous reactions. The relationship between the # of molecules and the # of atoms is used for conversion: molecular formula. Gives the exact number of atoms of each element. Gives the atoms in a simplified form. Think of it like finding the multiple between the number of atoms.