Lecture 3 - Chemistry Introduction.pdf

Using the periodic table identify how many valence

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Using the Periodic Table… Identify how many valence electrons are in the outer shell of these elements. Chlorine (Cl) Calcium (Ca) Oxygen (O) Carbon (C) Phosphorus (P) Aluminum (Al) Sodium (Na)
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Using the Periodic Table… Identify how many valence electrons are in the outer shell of these elements. Chlorine (Cl) 7 Calcium (Ca) 2 Oxygen (O) 6 Carbon (C) 4 Phosphorus (P) 5 Aluminum (Al) 3 Sodium (Na) 1
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Using the Periodic Table… Which elements want to give electrons away? Which ones don’t? Chlorine (Cl) 7 Calcium (Ca) 2 Oxygen (O) 6 Carbon (C) 4 Phosphorus (P) 5 Aluminum (Al) 3 Sodium (Na) 1
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Using the Periodic Table… Which elements want to give electrons away? Which ones don’t? Chlorine (Cl) 7 Calcium (Ca) 2 Oxygen (O) 6 Carbon (C) 4 Phosphorus (P) 5 Aluminum (Al) 3 Sodium (Na) 1
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Ions If you take or add an electron from an element, the CHARGE changes! Cations : Positive Charge Anions: Negative Charge
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What is the pattern? 1 proton = 1 electron
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What is the pattern? 1 proton = 1 electron
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Using the Periodic Table… Identify how many valence electrons are in the outer shell of these elements. Chlorine (Cl - ) Calcium (Ca +1 ) Oxygen (O -2 ) Carbon (C) Phosphorus (P -1 ) Aluminum (Al +1 ) Sodium (Na +1 )
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Using the Periodic Table… Identify how many valence electrons are in the outer shell of these elements. Chlorine (Cl - ) 8(0) Calcium (Ca +1 ) 1 Oxygen (O -2 ) 8(0) Carbon (C) 4 Phosphorus (P -1 ) 6 Aluminum (Al +1 ) 2 Sodium (Na +1 ) 8(0)
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A key microbial nutrient is Iron (Fe).
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  • Fall '16
  • Liz Johnson
  • Atom, Polar Covalent Bonds

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