lec01 matters at atomic level
TRANSCRIPT
Matters at atomic levelTran Anh Tuan
Materials EngineerMES Team
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Lecture map
atomic arrangement in matters
atomic bonding
atomic structure
covalentionicmetallicVan der Waals Gase
sCrystalsAmorphousLiquids
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Atomic structure
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Atom = proton + neutron + electron
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Atom = proton + neutron + electron
- charge: + 1.6e-19 eV- heavy weight
- charge: 0 ( no charge)- heavy weight (~proton)
- charge: - 1.6e-19 eV- light weight
no charge
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Atom = proton + neutron + electron
- charge: + 1.6e-19 eV- heavy weight
- charge: 0 ( no charge)- heavy weight (~proton)
- charge: - 1.6e-19 eV- light weight
nucleous core
electronic shell
~ atom weight
no charge
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atomic arrangement in matters
atomic bonding
atomic structure
covalentionicmetallicVan der Waals Gase
sCrystalsAmorphousLiquids
Lecture map
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Atomic bonding
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Covalent bonding
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Cl
Cl
Covalent bonding
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Cl
Cl
Individual Cl atoms with 7
outer electrons
Covalent bonding
Chemically Unstable
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bondingCl
Cl
Cl
Cl
Individual Cl atoms with 7
outer electrons
Covalent bonding
Chemically Unstable
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bondingCl
Cl
Cl
Cl
Individual Cl atoms with 7
outer electrons
One Cl2 molecular with
8 outer electrons
Covalent bonding
Chemically Unstable
Chemically Stable
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Ionic bondingLi F
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Ionic bondingLi F
Individual Li and F atoms with 1
and 7 outer electrons
Chemically Unstable
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Ionic bondingLi F
Individual Li and F atoms with 1
and 7 outer electrons
Chemically Unstable
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Ionic bondingLi F
bondingLi
F
Individual Li and F atoms with 1
and 7 outer electrons
One LiF molecular with
8 outer electrons
Chemically Unstable
Chemically Stable
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Metallic bonding metallic
ionfree electron
Balanced Coulombic Stochastic Interaction.Metallic materials
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Van der Waals bonding positively
chargednegatively charged
Usually seen in polymeric materials
+ - + - + - +
-Polarized molecular
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atomic arrangement in matters
atomic bonding
atomic structure
covalentionicmetallicVan der Waals Gase
sCrystalsAmorphousLiquids
Lecture map
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Atomic arrangement
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Gaseous matters
2D illustration of atomic arrangement in gaseous matters
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Gaseous mattersabsolutely
chaotic
2D illustration of atomic arrangement in gaseous matters
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Gaseous mattersabsolutely
chaotic
2D illustration of atomic arrangement in gaseous matters
no near - ordered
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Gaseous mattersabsolutely
chaotic
2D illustration of atomic arrangement in gaseous matters
no near - orderedno far - ordered
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Solid crystals
2D illustration of atomic arrangement
in solid crystals
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Solid crystalsabsolutely ordered
2D illustration of atomic arrangement
in solid crystals
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Solid crystalsabsolutely orderednear - ordered
2D illustration of atomic arrangement
in solid crystals
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Solid crystalsabsolutely orderednear - orderedfar - ordered
2D illustration of atomic arrangement
in solid crystals
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Liquid and amorphous
2D illustration of atomic arrangement
in liquids and amorphous
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Liquid and amorphousPartly,
unstably ordered
2D illustration of atomic arrangement
in liquids and amorphous
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Liquid and amorphousPartly,
unstably orderednear - ordered
2D illustration of atomic arrangement
in liquids and amorphous
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Liquid and amorphousPartly,
unstably orderednear - orderedno far - ordered
2D illustration of atomic arrangement
in liquids and amorphous
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End of Lecture 01Next:
Lecture 02: Crystal lattice