Particles of an Atom You know, like particle-things and such…

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Presentation transcript:

Particles of an Atom You know, like particle-things and such…

Subatomic Particles ParticleLocationMassCharge Electron“Clouds” around nucleus – We don’t know exactly Almost zeroNegative ProtonNucleus1 amuPositive NeutronNucleus1 amuNeutral

Mass of Subatomic Particles

Size of Nucleus

Atomic Number A number unique to each element. Represents the number of protons in an atom. Also represents the number of electrons

Mass Number Represents the mass of an atom. Represented in “Atomic Mass Units” (amu) Mass # = # of protons + # of neutrons

Equations Atomic # = # of protons = # of electrons Mass # = # of protons + # of neutrons

SymbolElementAtomic #ProtonsNeutronsElectronsMass # Carbon612 Zn Einsteinium Cu64 Gold130 Lu

Isotopes Atoms of the same element with different mass numbers. Mass # Atomic # Nuclear symbol: Hyphen notation: carbon-12

Isotopes Nucleus Electrons Nucleus Neutron Proton Carbon-12 Neutrons 6 Protons 6 Electrons6 Nucleus Electrons Carbon-14 Neutrons 8 Protons 6 Electrons Nucleus Neutron Proton

Isotopes Chlorine-37 –atomic #: –mass #: –# of protons: –# of electrons: –# of neutrons: Cl 37 17