CHEM 1A03 Study Guide - Midterm Guide: Atomic Nucleus, Nuclear Fission, Electronvolt

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CHEM 1A03 Full Course Notes
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CHEM 1A03 Full Course Notes
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Radioactive particles: isotopes with unstable atomic nuclei; emits high-energy streams of particles or electromagnetic radiation. Radionuclides: radioactive isotopes; an isotope whose nuclei emits particles or radiation. Changes depending on the particle"s velocity relative to the observer and the velocity of light. When the particle has no velocity the denominator reduces to 1 so that mass equals mass of particle at rest. As velocity approaches c the ratio approaches, making the denominator close to 1, mass increases. When velocity = speed of light, mass would be infinitely large since denominator would be zero. Mass for any object equals rest mass in ordinary everyday experience to several significant digits. Law of conservation of mass-energy: the sum of all energy in the universe and all of the mass (expressed as an equivalent in energy) is constant. E is related to the change in rest mass, m0. An enormous value of e corresponds to an extremely small change in mass.

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