E - P + N O Oh My!. Particle Proton electron Neutron Symbol Where Charge Mass.
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Transcript of E - P + N O Oh My!. Particle Proton electron Neutron Symbol Where Charge Mass.
e- P+ NO
Oh My!
Particle Proton electron Neutron
Symbol
Where
Charge
Mass
2
He
Helium
4.00260
Number of ProtonsNumber of electrons
Number of Protons + Neutrons
Atomic Number
Atomic Mass
Protons Electrons Neutrons
C
Na
Os
Rn
U
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 IsotopesIsotopes.
• Famous Isotopes – U-235, C-14, Pu-239, Po-210
Protons Electrons Neutrons
C-14
C-12
U-238
U-235
H-1 (hydrogen)
H-2 (deuterium)
H-3 (tritium)
• 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 IonsIons
Protons Electrons Neutrons
F-
Na+
Cl-
O-2
Al+3
Ba+2
Atomic Mass
• Average mass of all the isotopes as they exist on Earth
Put in the information for the 3 subatomic particles
Particle name
Symbol
Charge
Location in atom
Mass
Elements, Isotopes and Ions - Oh My!!!
Protons Electrons Neutrons
C
Au
U-238
F-
Na+
Al+3
U-235+6
DisclaimerAloha
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