Objective/Warm-Up SWBAT distinguish between ionic, covalent, and metallic substances. Where on the periodic table are metals? Where on the periodic table.

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Presentation transcript:

Objective/Warm-Up SWBAT distinguish between ionic, covalent, and metallic substances. Where on the periodic table are metals? Where on the periodic table are non-metals?

Foldable Different types of bonding: Covalent Ionic Metallic On the outside: put the name and a picture Inside top: put properties Inside bottom: put examples

Covalent

Properties of Covalent Compounds Low melting and boiling points Soft Sharing of electrons Some dissolve in water Do not conduct electricity NON-METAL WITH NON-METAL Electronegativity difference < 2.0

Examples Sugar Water Carbon dioxide Oil Wax

Ionic

Properties of Ionic Compounds High melting and boiling points Hard, brittle Transfer of electrons Most dissolve in water Conduct electricity in liquid form or when dissolved in water METAL WITH NON-METAL Electronegativity difference > 2.0

Examples NaCl (salt) KBr CaCl2 MgSO4

Metallic

Properties of Metallic Compounds Malleable-can be hammered flat Ductile-can be pulled into a wire Luster-shiny A “sea of electrons” Good conductors of heat and electricity METAL WITH A METAL

Examples Gold Copper Sodium Calcium Magnesium Platinum

Electrons occupy innermost shell first Exposed electrons in outer shell responsible for bonding Electrons being positively charged are attracted to the positive nucleus Outer shells only get filled after inner shells have reached their capacity for electrons

Chemical bond Force of attraction between atoms that holds them together Whether someone is building a home or a very large buiding, cement will be used to bond the bricks and blocks of the buiding together Atoms are the buiding blocks of matter, and instead of being held together by cement, the atoms of matter are held together by chemical bonds The combining of atoms of elements to form new substances is called chemical bonding

Ionic vs. Covalent Bonds Metal with a non-metal Transfer of electrons Follows the octet rule Two non-metals Sharing of electrons Ionic Covalent

Wrap-Up Explain the following cartoon:

“Perhaps one of you gentlemen wouldn’t mind telling me just what outside the window you find so attractive…?” 17