ionic compounds
TRANSCRIPT
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Use the periodic table to find the missing information
Chlorine (Cl)
1.Number of protons 2.Number of electrons 3.Number of neutrons 4.Number of energy shells5.Number of valence electron(s)
17
17
18
3
7
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ReviewReview IsotopesIsotopes
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CompoundsCompounds
Matter made up of two Matter made up of two or more elements or more elements chemically combinedchemically combined
The elements lose their The elements lose their individual propertiesindividual properties
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CompoundsCompounds The new compounds The new compounds
formed have new formed have new propertiesproperties
Ratio of their parts are Ratio of their parts are exactexact
NaCl, HNaCl, H22O, COO, CO22
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CompoundsCompounds Molecule-smallest Molecule-smallest unit of a compoundunit of a compound
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Ionic BondIonic Bond Strong attractive Strong attractive force between ions of force between ions of opposite charges opposite charges
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Ionic BondIonic Bond Valence electrons can be Valence electrons can be
transferredtransferred From one atom to anotherFrom one atom to another If an atom gains or loses If an atom gains or loses
electrons, it becomes electrons, it becomes electrically chargedelectrically charged
IonIon
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Ionic BondIonic Bond Ionic compounds are Ionic compounds are usually formed from a usually formed from a metal and a nonmetal metal and a nonmetal
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Ionic Bond• NaCl
• MgO
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Properties of Ionic CompoundsProperties of Ionic Compounds
Form strong 3-D crystal Form strong 3-D crystal structuresstructures
Hard, rough, and brittleHard, rough, and brittleSolid at room tempSolid at room tempHigh melting pointsHigh melting points
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Properties of Ionic CompoundsProperties of Ionic Compounds
Tend to dissolve in Tend to dissolve in waterwater
This solution conducts This solution conducts electricity very wellelectricity very well
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