CHEM 3650 Lecture Notes - Lecture 6: Iodine, Magnesium, Organic Compound
Document Summary
The cannot be broken down into simpler substances. Set 6 atom--> molecule --> cell continue it tissue-->organ --> organ system--> organism --> population --> community --> ecosystem organic compounds contain. Carbon , and some have hydrogen and oxygen. Composition of living things : 96% carbon, hydrogen, oxygen, nitrogen. Composition of living things :less than 0. 1 % Atoms are neutral when? protons= electrons what is the atomic mass measuring? weight of protons and neutrons, not electrons because they are so small that weight isn"t even significant. What do radioisotopes do to an element? an unstable isotope that decays, and gives off radiation as it decays it transforms an atom into another atom of a different element. 14c is unstable and 1 neutron splits into an electron and a proton. Why? the chemical properties of an atom because they are involved in chemical reactions. How many electrons are held in each orbital. 4 main biological reactions dehydration synthesis, hydration, neutralization, redox.
