atomic_theory_nuc

atomic_theory_nuc - Atomic Theory Nuclear Theory 1 Nature...

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Atomic Theory Nuclear Theory 1. Nature of matter. 400 BC Greeks said matter consists of tiny particles called atoms. Dalton’s atomic theory (1766-1814) 1. Each element is made of individual particles called atoms. 2. Atoms are indivisible, cannot be created or destroyed. 3. All atoms of one element are identical. 4. Atoms of one element are different from atoms of any other atom. 5. Atoms of different elements can combine to form compounds. O 2 + C CO 2 Whole number ratios 2. Subatomic particles. A) Mass charge symbol amu Electrons 9.107 x 10 -28 g -1 e’ 0 Proton 1.672 x 10 -24 g +1 p 1 Neutron 1.672 x 10 -24 g 0 n 1 1 amu = 1/12 the weight of one carbon-12 atom, 1 amu = 1 proton or 1 neutron +
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B) Nuclear atom (use overhead) Things learned 1. Small dense nucleus 2. Positive charge contained in nucleus 3. Nucleus surrounded by a large amount of empty space. 4. Outside of nucleus is thinly populated by electrons, in a neutral atom electrons = protons 3. Isotopes Number of protons = atomic number
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This note was uploaded on 09/02/2011 for the course CHEM 2 taught by Professor Harrison during the Spring '11 term at West Valley.

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atomic_theory_nuc - Atomic Theory Nuclear Theory 1 Nature...

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