Reading the Periodic Table What does Atomic Mass tell us?

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Presentation transcript:

Reading the Periodic Table

What does Atomic Mass tell us?

QUESTION… How could you find the number of neutrons??? Answer: Atomic # # of neutrons Atomic mass (rounded)

Lets give it a Try! How many protons, electrons, and neutrons does Ne have? 10 p + 10 e - 10 n 0

Let’s Practice… Find the number of p +, e -, and n for each element: 1. H 2. He 3. Tb 1 p + 2 p + 65 p + 1 e - 2 e - 65 e - 0 n 2 n 94 n

Class Work… Find the number of p +, e -, and n for each element: 1. Si 2. Hg 3. Fe 4. Ta 5. Pt

Protons (+): Atomic Number Neutrons: Atomic Mass minus Protons Electrons (-): Same number as Protons

Protons (+): Atomic Number Neutrons: Atomic Mass minus Protons Electrons (-): Same number as Protons

Protons (+): Atomic Number Neutrons: Atomic Mass minus Protons Electrons (-): Same number as Protons

Atomic Particles ParticleLocation Mass in amuCharge Proton Neutron Electron

Atomic ParticlesParticleLocation Mass in amuChargeProton Neutron Electron What is amu???? amu is short for atomic mass unit

Atomic Particles ParticleLocation Mass in amuCharge Proton Neutron Electron Nucleus Cloud

Atomic Inventory ElementSymbolAtomicNumber Mass Number ProtonsNeutronsElectrons He Mg Fe Ar Helium Magnesium Iron Argon

Atomic Inventory ElementSymbolAtomicNumber Mass Number ProtonsNeutronsElectrons Zn Br Al U Zinc Bromine Aluminum Uranium 27

Atomic Inventory ElementSymbolAtomicNumber Mass Number ProtonsNeutronsElectrons Na Kr Ca Ag Sodium Krypton Calcium Silver