INTRODUCTION TO CHEMICAL BONDING AND NAMING (REGULAR)

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Presentation transcript:

INTRODUCTION TO CHEMICAL BONDING AND NAMING (REGULAR)

VALENCE ELECTRONS ELECTRONS used in bonding (outermost)

REVIEW – ION FORMATION Positive (+) Ions we call CATIONS Negative (-) Ions we call ANIONS Remember this!!!!!

CHEMICAL BONDING The cation (+) is always written first followed by the anion (-)

MONATOMIC IONS IONS consisting of only one atom Mg +2 Cl -1

POLYATOMIC IONS A group of elements that have an overall charge (NH4) +1 or NH4 +1 = Ammonium (PO 4 ) -3 or PO 4 -3 = Phosphate

POLYATOMIC IONS (FIND ON ION CHART)

CHEMICAL BONDING 3 main types of chemical bonding Ionic covered today Metals or Nonmetals determines type

COLOR THE PT THE SUB HAS LIKE THE FOLLOWING SLIDE (COLORS DON’T HAVE TO MATCH) AND THEN FILE IT)

= METALS = NONMETALS

Bond #1 IONIC BOND bond formed between two ions by the transfer of electrons

BOND #1: IONIC BOND “SIMPLIFIED” Opposite Charged Ions ‘Attract’ to each other

BOND #1: IONIC BOND METAL – NONMETAL (+) (-)

Sodium: Na +1 Chlorine: Cl -1 (cation) (anion) Na-Cl Notice the cation written 1 st

WRITING IONIC COMPOUNDS Get Handout showing how to write these compounds!!!!! (file this cheater sheet) This will help to COMPLETE #11 – 40 on Puzzle Piece Lab

PUZZLE PIECE LAB: YOU ARE ONLY CUTTING OUT AND PASTING #1-10. #11-40 CAN BE ANSWERED ON EITHER SEPARATE SHEET OR ACTIVITY ITSELF

1) Magnesium Chloride Mg +2

Cl -1

Mg +2 Cl -1 1 Mg piece 2 Cl pieces

All pieces must make a square/rectangle. No open ends. Keep adding both cations and anion pieces until you make a square/rectangle

Chemical formula for Magnesium Chloride Mg 1 Cl 2  MgCl 2

STOP HERE!!!!!!!!!!!!!!