CAS GE 100 Lecture Notes - Lecture 6: Nuclear Fission, Nuclear Weapon, Nuclear Fusion

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75% of us petroleum consumption is used in transportation. A molecule is an assembly of two or more atoms. A compound is a molecule that contains at least two different elements. Isotope: same element, different number of neutrons. Nuclear fission: when a large isotope splits into lighter isotopes. Basis of nuclear energy and nuclear bomb. Nuclear fusion: nuclei of 2 light elements are combined together to form a heavier nucleus. Energy is the ability to do work. Used to organize materials into goods, provides heat, light, and other useful services. In natural environment, energy evaporates water, makes plants grow . The force applied to an object x the distance the object is moved. Society uses fossil fuels to do a lot of our work. There is no inc or dec in quantity of energy in any energy conversion. In all energy exchanges, energy loses its ability to do work, i. e. it is degraded in quality.

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