Structure of an Atom Nucleus: Nucleus:Proton.

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Presentation transcript:

Structure of an Atom

Nucleus:

Nucleus:Proton

Nucleus:Proton+

Nucleus:Proton+ Neutron

Nucleus:Proton+ Neutron No charge

Structure of an Atom Nucleus:Proton+ Neutron No charge Outside the Nucleus:

Structure of an Atom Nucleus:Proton+ Neutron No charge Outside the Nucleus: Electron

Structure of an Atom Nucleus:Proton+ Neutron No charge Outside the Nucleus: Electron -

Structure of an Atom

Atomic Number -

Structure of an Atom Atomic Number - The number of Protons in the nucleus

Structure of an Atom

Atomic Mass -

Structure of an Atom Atomic Mass - The number of Protons plus the number of Neutrons in the nucleus

Structure of an Atom

Note:

Note: On the Periodic Table

Structure of an Atom Note: The number of Protons EQUALS the number Electrons in the atom On the Periodic Table

Structure of an Atom Note: On the Periodic Table

Structure of an Atom Note: ALL Elements on the Periodic Table are NEUTRAL On the Periodic Table

Structure of an Atom Note: On the Periodic Table

Structure of an Atom Note: The mass of an Element may change, but the Protons DO NOT! On the Periodic Table

Structure of an Atom

Question:

Question: If the Protons stay the same, what is different to make the Mass change?

Structure of an Atom Answer:

Answer: Neutrons

Role of Electrons

Tiny Particles, Big Spaces

Role of Electrons Tiny Particles, Big Spaces Valence Electrons:

Role of Electrons Tiny Particles, Big Spaces Valence Electrons: Electrons farthest away from the Nucleus

Role of Electrons Tiny Particles, Big Spaces Valence Electrons: Involved in bonding

# of Valence Electrons

Models of Atoms

Dalton Model Models of Atoms

Dalton Model Models of Atoms John Dalton

Dalton Model Models of Atoms John Dalton Great Britain

Dalton Model Models of Atoms John Dalton Great Britain 1808

Dalton Model 1808 Models of Atoms

Dalton Model Each Element is made of small atoms. Models of Atoms 1808

Dalton Model Each Element is made of small atoms. Tiny, solid balls 1808

Models of Atoms

Thomson Model

Models of Atoms Thomson Model J. J. Thomson

Models of Atoms Thomson Model J. J. Thomson Great Britain

Models of Atoms Thomson Model J. J. Thomson Great Britain 1897

Models of Atoms Thomson Model 1897

Models of Atoms Thomson Model Plum Pudding

Models of Atoms Thomson Model Plum Pudding - positively charge sphere with electrons inside 1897

Models of Atoms

Nagaoka Model

Models of Atoms Nagaoka Model Hantaro Nagaoka

Models of Atoms Nagaoka Model Hantaro Nagaoka Japan

Models of Atoms Nagaoka Model Hantaro Nagaoka Japan 1904

Models of Atoms Nagaoka Model 1904

Models of Atoms Nagaoka Model Large Sphere in center with positive charge, 1904

Models of Atoms Nagaoka Model Large Sphere in center with positive charge, electrons outside 1904

Models of Atoms

Rutherford Model

Models of Atoms Rutherford Model Ernest Rutherford

Models of Atoms Rutherford Model Ernest Rutherford Great Britain

Models of Atoms Rutherford Model Ernest Rutherford Great Britain 1911

Models of Atoms Rutherford Model 1911

Models of Atoms Rutherford Model Atom is mostly Empty Space 1911

Models of Atoms Rutherford Model Atom is mostly Empty Space Electrons orbit randomly around the nucleus 1911

Gold Foil Experiment

Models of Atoms

Bohr Model

Models of Atoms Bohr Model Niels Bohr

Models of Atoms Bohr Model Niels Bohr Denmark

Models of Atoms Bohr Model Niels Bohr Denmark 1913

Models of Atoms Bohr Model 1913

Models of Atoms Bohr Model Electrons are not Random 1913

Models of Atoms Bohr Model Electrons are not Random Electrons in specific layers 1913

Models of Atoms Bohr Model Electrons are not Random Electrons in specific layers Give energy as they move 1913

Models of Atoms

Chadwick Model

Models of Atoms Chadwick Model James Chadwick

Models of Atoms Chadwick Model James Chadwick Great Britain

Models of Atoms Chadwick Model James Chadwick Great Britain 1932

Models of Atoms Chadwick Model 1932

Models of Atoms Chadwick Model Neutron has same mass as the Proton but no electrical charge 1932

Models of Atoms

Modern Model

Models of Atoms Modern Model NOW

Models of Atoms Modern Model Electrons form a negatively charged Cloud NOW

Models of Atoms Modern Model NOW Electrons form a negatively charged Cloud

Models of Atoms Modern Model NOW Electron Cloud Theory

I won’t ask if there are more notes!