BI110 Lecture Notes - Chemical Bond, Atomic Nucleus, Redox
Document Summary
Energy level s of electrons of an atom: Electrons exist in district surrounds of orbitals. Higher energy state- further away from the nucleus. Electro negativity: more electronegative tends to hold the electron closer to the atomic nucleus. Glucose: lots of potential energy: electrons in c-h bonds are equidistant from both nuclei. ^ good for respiration , c-h bonds- contains high energy- can be easily removed. O highly electronegative- less energy- hard to remove. Fatty acids- more potential energy than glucose but hydrophobic. Oxidation of one thing is always reduction of something else. Transfer electrons from donor to acceptor atoms. Electrons lose energy as they pass from donor to acceptor molecule. Electrons are accompanied by one or more electrons. - usually protons accompany the electrons. Donor become oxidized as it releases electrons. Oxygen is very often an electron acceptor. Redox reactions can involve a change in the degree of electron sharing .
