5.12 Organic Chemistry I (MIT)
This subject deals primarily with the basic principles to understand the structure and reactivity of organic molecules. Emphasis is on substitution and elimination reactions and chemistry of the carbonyl group. The course also provides an introduction to the chemistry of aromatic compounds.
Kinetic and Potential Energy of Atoms
Kinetic and potential energy of atoms result from the motion of electrons. When electrons are excited they move to a higher energy orbital farther away from the atom. The further the orbital is from the nucleus, the higher the potential energy of an electron at that energy level. When the electron returns to a low energy state, it releases the potential energy in the form of kinetic energy. (02:25)
Trees provide many animals, including humans, with food. Coconuts are just one of the several nuts and fruits that trees produce that are edible.
Tempo and mode in macroevolution Fall 2007
General Biology - Fall 2007. This is a general introduction to plant development, form, and function; population genetics, ecology, and evolution. Intended for students majoring in the biological sciences, but open to all qualified students. In general at the end of Biology 1B students will be able to: describe the scientific method and explain how it would be applied to a novel problem; explain the consequences of random variation when extrapolated over time; distinguish between positive and
Obama, Republicans spar over debt plan
July 15 - President Obama and Republicans trade demands for a serious deficit plan, underscoring the lack of progress plaguing negotiations to avert a looming government default. Jon Decker reports.