chapter19_NuclearChemistry - Radioactivity and Nuclear Chemistry Chapter 19 1 Comparison Of Chemical and Nuclear Reactions 1 2 Nuclear Reactions

chapter19_NuclearChemistry - Radioactivity and Nuclear...

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1 Chapter 19  Radioactivity and  Nuclear Chemistry
2 Comparison Of Chemical  and Nuclear Reactions Nuclear Reactions 1 Elements may be converted from one to another. 2 Particles within the nucleus, such as protons and neutrons, are involved in reactions. Chemical Reactions 1 No new elements can be produced, only new chemical compounds. 2 Usually only the outer most electrons participate in reactions.
3 Comparison Of Chemical  and Nuclear Reactions Nuclear Reactions 3 Release or absorb immense amounts of energy, typically 1000 times more. 4 Rates of reaction are not influenced by external factors. Chemical Reactions 3 Release or absorb much smaller amounts of energy. 4 Rates of reaction depend on factors such as concentration, pressure, temperature, and catalysts.
4 The Nucleus Remember that the nucleus is comprised of the two nucleons : protons and neutrons. The number of protons is the atomic number. The number of protons and neutrons together is effectively the mass of the atom.
5 The Nucleus Terminology used in nuclear chemistry . 1. Nuclide refers to a nucleus with specific numbers of protons and neutrons. 2. Isotopes are nuclei that have the same number of protons but different neutron numbers. Isotopes are the same element.
6 Radioactivity Nuclides of many elements are unstable. They decay spontaneously, emitting subatomic particles and electromagnetic radiation. We refer to these nuclides as radioactive .
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Tro, Chemistry: A Molecular  Approach 9
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14 Neutron-Proton Ratio  and Nuclear Stability

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