ANPS 019 Lecture Notes - Lecture 2: Hydrogen Atom, Covalent Bond, Chemical Polarity

• School: University of Vermont
• Department: Anatomy/Physiology
• Course: ANPS 019
• Professor: Sean Patrick Flynn

Document Summary

Building blocks of the body (main elements: na, mg, k, ca, h, fe, c, n, o, p, s, cl. Lesser elements compose less than 1% of body weight. Major elements compose more than 98% of body weight. Bonds tie one atom to another to create bigger chemical structures in the body. Most types of bonds are made/broken by enzymes. Atoms that have gained or lost electrons and have become charged as a result. Electron donation allows atoms to become stable. Ionic bonds: formed by attraction between cations and anions. Ions carry chare and allow for the electrical properties of biologic tissue. Formed when atoms share electrons to form a molecule. Polar covalent bond: atoms share electrons unequally. If atoms share electrons equally non-polar covalent bond: create molecules that behave like ions and are attracted to other charged molecules. Oxygen has electronegativity (draws electrons towards itself) Hydrogen bonds create weak forces that affect the shape and property of compounds.