CHEM 1100 Study Guide - Midterm Guide: Organofluorine Chemistry, Tanning Bed, Fluorine
Document Summary
Two types of matter: pure substances and mixtures. Mixture: physical combination of 2 or more substances present in variable amounts needs to be able to be separated physically. Inhaled air: nitrogen (78%), oxygen (21%), argon (0. 9%), co2 (0. 04%), Exhaled air: nitrogen (78%), oxygen (16%), argon (0. 9%), co2 (4%), Midday ozone levels reach about 0. 4 ppm = 0. 4 ozone molecules- 1 x 10^6 molecules and atoms in air. Sulfur dioxide in the air should not exceed 30 ppb. 30 sulfur dioxide molecules- 1 x 10^9 molecules and atoms in air smallest. Particulate matter (pm) matter in the air that can end up in blood stream. Positive exponents move number to the right 1. 1 * 10^4 = 11000. Negative exponents numbers move to the left 2. 1 * 10^-6 = . 0000021. Yes mixture- by filter and evaporation, made by 2 or more pure substances, variable composition ex. sand. Found: in the periodic table: chlorine, oxygen, tin, copper.
