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E- P+ NO Oh My!.

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Presentation on theme: "E- P+ NO Oh My!."— Presentation transcript:

1 e- P+ NO Oh My!

2 Particle Proton electron Neutron
Symbol Where Charge Mass


4 He Helium 4.00260 Atomic Number 2 Atomic Mass
Number of Protons Number of electrons Number of Protons + Neutrons Atomic Mass

5 Protons Electrons Neutrons
Na Os Rn U

6 Isotopes and Ions Since the number of Protons can’t change, what about the number of electrons or neutrons? Yup – 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 C-14 C-12 U-238 U-235 H-1 (hydrogen) H-2 (deuterium) H-3 (tritium)
Protons Electrons Neutrons C-14 C-12 U-238 U-235 H-1 (hydrogen) H-2 (deuterium) H-3 (tritium)

8 Danger – math weirdness
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. 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!!!
Protons Electrons Neutrons C Au U-238 F- Na+ Al+3 U-235+6

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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