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Bond types.notebook
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October 26, 2015
Sep 165:07 AM
EquationSubscriptChemical formulaChemical bondIonCation
AnionMetallic bondIonic bondCovalent bondOctet RuleValence electrons
(PS12.1) I can compare and contrast ionic, covalent and metallic bonds.(PS12.2) I can determine if an ion is positive or negative due to electron transfer.
Chemical Reactions:
Bond types.notebook
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October 26, 2015
Oct 2111:59 AM
(PS12.1) I can compare and contrast ionic, covalent and metallic bonds.
Types of Bonds
ionic covalent metallic
Bond types.notebook
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October 26, 2015
Sep 142:40 PM
• molecules have only covalent bonds • compounds can have either covalent or ionic
Covalent Bonds: a bond between 2 nonmetals. • formed by the sharing of one or more electrons between atoms
Methane Gas: CH4
Carbon Dioxide CO2
Bond types.notebook
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October 26, 2015
Metallic bonds
Metallic Bonds
• each electron becomes detached from its parent atom to be "pooled"
"sea" of e
electrophorus demo
• electrical and thermal conductivity• malleability
• bond between many metal atoms
properties
Bond types.notebook
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October 26, 2015
Sep 142:39 PM
Ionic Bond: a bond between
a metal (cation) and a nonmetal (anion) with opposite charges.
• a complete transfer of electrons• characteristic of salts
http://www.youtube.com/watch?v=Ftw7a5ccubs
Bond types.notebook
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October 26, 2015
Sep 279:02 PM
If an atom ...acquires a negative charge it ________ electrons acquires a positive charge it ________ electrons
Two types:
Ca ion Pronounced: “cat + ion”
aNion = Negative ionAnion: negatively charged particle
Cation: Positivly charged particle. +
They are always "Paws"ative
charged particlesIons:
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October 26, 2015
Oct 45:28 AM
valence electrons: electrons in the outermost shell
How many valence electrons?
1 87563 4
2multiple and varies
Octet Rule and Stability
Bond types.notebook
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October 26, 2015
Sep 278:57 PM
Determining the charge on an atom
What are the charges on subatomic particles?Protons = +1Electrons = 1
what is the charge?
If protons = electrons then the charge is 0
Each + cancels out a –
++ +
+++ +
++
1 0 +1
(What do you have more of, + or ?)
An atom of oxygen has 10 electrons.What is the charge? Oxygen:
Protons 8 +’s Electrons 10 –’s
One more e than p+, so the charge is 2
Neutrons = O
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