CHEM 1100 Study Guide - Midterm Guide: Ogallala Aquifer, Iron(Ii) Chloride, Lone Pair
Document Summary
100 degrees celsius (unusual compared to other molecules) ex. High specific heat (amount of heat to raise 1 degrees celsius) Electrons not shared equally; more time around oxygen. How attractive an atom is to electrons ex. Top right of periodic table has highest electronegativity. Bottom left of periodic table has lowest electronegativity (except for noble gasses, group 18) Larger atom electron further out easier to knock off. Hydrogen is being pulled towards oxygen ex. partial positive end and partial negative end. Attractive forces on opposite charges between two different molecules ex. oxygen two electron lone pairs are attracted to h"s on other h2o molecule; but not sharing electrons. High melt temp, heat of fusion, specific heat. Usually solid denser than liquid; not with water. Energy needed to raise 1g by 1 degrees celsius. We need water in everything we need ex. rice, wheat, beef, gallon of milk, chicken, corn, cotton t-shirt. Water is the solvent; more susceptible to contamination.
