Atomic Math

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# Atomic Math - PowerPoint PPT Presentation

## Atomic Math

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##### Presentation Transcript

1. January, 2012 Atomic Math

2. Regular Atoms • Atomic Number • = the number of protons • = the number of electrons • Atomic Mass • = the number of protons + neutrons • Gold • P: 79 • N: 197-79 = 118 • E: 79

3. Your Turn: Regular Atoms • P: 23 N: 28 E: 23 • P: 44 N: 57 E: 44 • P: 53 N: 74 E: 53 • P: 16 N: 16 E: 16 • P: 14 N: 14 E: 14 • P: 8 N: 8 E: 8 • P: 86 N: 136 E: 86 • P: 58 N: 82 E: 58 • Vanadium • Ruthenium • Iodine • Sulfur • Silicon • Oxygen • Radon • Cerium

4. Isotopes • Atoms of the SAME ELEMENT that have a different number of NEUTRONS (New Mass) Gold - 200 • Atomic Number • = Number of Protons • = Number of Electrons • Atomic Mass • = the number of Protons + Neutrons • =200 now! (See Above?) • Gold – 200 • P: 79 • N: 200 – 79 = 121 • E: 79

5. Your Turn: Isotopes! • P: 6 N: 8 E: 6 • P: 19 N: 18 E: 19 • P: 76 N: 124 E: 76 • P: 50 N: 65 E: 50 • P: 29 N: 36 E: 29 • P: 54 N: 80 E: 54 • P: 22 N: 28 E: 22 • P: 40 N: 60 E: 40 • Carbon-14 • Potassium-37 • Osmium-200 • Tin-115 • Copper-65 • Xenon-134 • Titanium-50 • Zirconium-100

6. Ions • Atoms of the same element where the ELECTRONS are not equal to the PROTONS • Charged Atoms • Losing Electrons Creates a Positive Ion • Gaining Electrons Creates a Negative Ion • Atomic Number • = the Number of Pr0tons • Atomic Mass • = the Number of Protons + Neutrons • Gold 3+ • P: 79 • N: 118 • E: 79 – 3 = 76

7. Your Turn: Ions • P: 13 N: 14 E: 10 • P: 5 N: 6 E: 9 • P: 18 N: 22 E: 19 • P: 34 N: 45 E: 32 • P: 26 N: 30 E: 25 • P: 88 N: 138 E: 93 • P: 80 N: 121 E: 78 • P: 10 N: 10 E: 12 • Aluminum 3+ • Boron 4- • Argon 1- • Selenium 2+ • Iron 1+ • Radium 5- • Mercury 2+ • Neon 2-