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Resumen de CienciasDaniel Bonilla 2/2/10

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Objectives

Characteristics of the Atom Particle Calculations Applications of Elements Periodic Table Compounds

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Characteristics of the Atom Parts

Proton (p+) Neutron (n0) Electron (e-)

Isotopes: When the Atom has a different number of Protons than Neutrons

Ion: When the Atom has a different number of Protons than Electrons

Types: Cation (+), Anion (-)

Neutral: No Charge

Formula for Average Mass: [(Isotope #)(% of

Abundance)/100]+[]+[]+[]…= X AMU

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Atomic Theory

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Particle Calculations

Z = p+ = A –n0

A = Z + no

n0 = A - Z p+ = A - no

e- = p+ - (charge)

Z : Atomic Number A : Mass Number n0 : Neutrons p+ : Protons e- : Electrons

ZAtomic SymbolName

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Periodic Table Element Block

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Uses of Isotopes

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Applications of Elements Radioactivity: when

the nucleolus of an element is very big, it becomes unstable. The smaller radioactive element is lead

Radiation: Emissions of a Radioactive element

Types of Radiation: Alpha(+) Beta(-) Gamma(Energy)

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Application of Elements Nuclear Fission: when a nucleus split Nuclear Fusion: when two nucleus join Radioactive Decay: when radiation is emitted and an

element nucleus starts getting smaller Half Life: when a radioactive element is half way

through its decay Nuclear Strong Force: is the force that holds together

the particles of the nucleus of an atomTransmutation Artificial: Natural:

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The Periodic Table

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