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E - P + N O Oh My!. Particle Proton electron Neutron Symbol Where Charge Mass.

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Presentation on theme: "E - P + N O Oh My!. Particle Proton electron Neutron Symbol Where Charge Mass."— Presentation transcript:

1 e - P + N O Oh My!

2 Particle Proton electron Neutron Symbol Where Charge Mass

3

4 2 He Helium Number of Protons Number of electrons Number of Protons + Neutrons Atomic Number Atomic Mass

5 Protons Electrons Neutrons C Na Os Rn U

6 Isotopes and Ions Since the number of Protons cant change, what about the number of electrons or neutrons? IsotopesYup – You can change the number of Neutrons- which changes the mass, and some properties – these different massed atoms of one element are called Isotopes. Famous Isotopes – U-235, C-14, Pu-239, Po-210

7 Protons Electrons Neutrons C-14 C-12 U-238 U-235 H-1 (hydrogen) H-2 (deuterium) H-3 (tritium)

8 What about changing the number of electrons? Adding or Subtracting Danger – math weirdness If you add electrons – the number is negative, if you subtract electrons, the number is positive. Ions Atoms with this problem – not neutral – are called Ions

9 Protons Electrons Neutrons F - Na + Cl - O -2 Al +3 Ba +2

10 Atomic Mass Average mass of all the isotopes as they exist on Earth

11 Put in the information for the 3 subatomic particles Particle name Symbol Charge Location in atom Mass

12 Elements, Isotopes and Ions - Oh My!!! ProtonsElectronsNeutrons C Au U-238 F-F- Na + Al +3 U

13 Disclaimer Aloha I put together these power points for use in my science classes. You may use them in your classes. Some images are public domain, some are used under the fair-use provisions of the copyright law, some are mine. Copyright is retained by the owners! Ted Brattstrom


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