POLAR/NONPOLAR.METALLIC

DO NOW Ionic or covalent? 1. CO 2 2. NaCl 3. CaF 2 4. H 2 O

Ionic: between a metal and nonmetal Covalent: between a nonmetal and nonmetal ***HYDROGEN IS A NONMETAL!

WORD WALL

REVIEW COVALENT BONDS F 2 H 2 O CF 4

TODAY’S BIG QUESTION Which of the covalent bonds share more equally?

ARE THESE THE SAME TYPE OF BOND? CH4 CH3F SHARE EVENLY SHARE UNEVENLY Non-polar Polar

TYPES OF COVALENT BONDS Non-polar covalent: even sharing of electrons  CH 4 Polar covalent: uneven sharing of electrons  CH 3 F

POLAR OR NONPOLAR? NH 3 THIS IS POLAR BECAUSE NITROGEN PULLS ON HYDROGEN MORE THAN HYDROGEN PULLS ON NITROGEN

POLAR OR NONPOLAR? CO2 This is nonpolar because the oxygens evenly pull on carbon and the carbon evenly on the oxygens

POLAR OR NONPOLAR? Water is polar because Oxygen pulls hydrogen more than hydrogen pulls oxygen

POLAR OR NONPOLAR? NaCl Ionic!

YOU DECIDE! POLAR OR NONPOLAR? CH 4 CH 3 Cl N 2 SH 2 HF Nonpolar Polar Nonpolar Polar

WHAT ABOUT THE MIDDLE OF THE PERIODIC TABLE?!?!?

THE LAST TYPE OF BONDING! METALLIC BOND: a bond formed by the attraction between positively charged metal ions and the electrons around them ALLOY: mixture of metals bonded such as steel or brass (Cu 3 Zn 2 )

VIDEO During/immediately following the video you must: DRAW the generally structure for metallic bonds LIST three properties of metals

METALLIC PROPERTIES 1.Good conductors of electricity 2.Malleable: can be hammered into thin sheets 3.Ductile: can be drawn into wires

IONIC PROPERTIES 1.Conduct electricity when dissolved 2.High melting and boiling point 3.Exist as a network of ions COVALENT PROPERTIES 1.Not good conductors of electricity 2.Low melting and boiling point 3.Exist as molecules H20H20

IONIC BONDING IS BETWEEN _____________ AND ______________ COVALENT BONDING IS BETWEEN _____________ AND ______________ METALLIC BONDING IS BETWEEN _____________ AND ______________ IONIC BONDING IS BETWEEN METALS NONMETALS COVALENT BONDING IS BETWEEN NONMETALS AND NONMETALS TALLIC BONDING IS BETWEEN METALS AND NONMETALS

MYSTERY COMPOUND Can your group figure out the compound? I will give hints. You must: 1. State the type of bond 2. Diagram it correctly (for metallic, draw structure from notes) 3. Have correct chemical formula

COMPOUND #1 1. LOW MELTING POINT 2. SHARES ELECTRONS EVENLY 3. IS A DIATOMIC MOLECULE 4. CONTAINS CHLORINE

COMPOUND #2 1. GOOD CONDUCTOR OF ELECTRICITY 2. VERY MALLEABLE 3. HAS COPPER AND ZINC

COMPOUND #3 1. EXISTS AS A MOLECULE 2. SHARES ELECTRONS UNEVENLY 3. CONTAINS THE TOP HALOGEN 4. HAS ONE HYDROGEN

COMPOUND #4 1. HAS BROMINE 2. EXISTS AS A NETWORK OF IONS 3. CONTAINS TWO BONDS 4. POSITIVE ION IS CALCIUM

COMPOUND #5 1. HIGH MELTING POINT 2. CONDUCTS ELECTRICITY WHEN DISSOLVED 3. 1 ST ELEMENT HAS ATOMIC NUMBER OF ND ELEMENT HAS ATOMIC MASS OF 35

CREATE YOUR OWN MYSTERY! MAKE 3-4 HINTS