apch02_nucleaatom - 5. What is the significance of the...

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South Pasadena • AP Chemistry Name ________________________________ Period ___ Date ___/___/___ 2 • Atoms and Elements THE NUCLEAR ATOM ALL of the answers to this worksheet can be logically figured out by looking at the Schematic Diagrams for Various Atoms , the Periodic Table, and discussing with your partners. All of the information you need is here somewhere. Determine each answer and be able to give convincing reasons for each answer. Good luck. 1. How many protons are found in 12 C? 13 C? 13 C - ? 2. How many neutrons are found in 12 C? 13 C? 13 C - ? 3. How many electrons are found in 12 C? 13 C? 13 C - ? 4. Based on the model, a) what do all carbon atoms (and ions) have in common? b) what do all hydrogen atoms (and ions) have in common?
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Unformatted text preview: 5. What is the significance of the atomic number, Z, above each atomic symbol in the periodic chart? 6. What do all nickel (Ni) atoms have in common? 7. How is the mass number, A, (left-hand superscript next to the atomic symbol) determined? 8. What structural feature is different in isotopes of a particular element? 9. a) What feature distinguishes a neutral atom from an ion? b) How is the charge on an ion determined? 10. Where is most of the mass of an atom, within the nucleus or outside of the nucleus? Explain your reasoning. 11. Complete the following table: Isotope Atomic Number Z Mass Number A Number of electrons 31 P 15 18 O 8 19 39 18 58 Ni 2+ 58...
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apch02_nucleaatom - 5. What is the significance of the...

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