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Properties of Compounds
Chemistry 11 Ms. McGrath
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Properties of Ionic compounds
Property state at room temperature crystalline solid melting point high electrical conductivity as a liquid yes solubility in water most have high solubility conducts electricity when dissolved in water
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Properties of Molecular compounds
Property state at room temperature gas, liquid, solid melting point low electrical conductivity as a liquid no solubility in water most have low solubility conducts electricity when dissolved in water not usually
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Ionic and Molecular Compounds
Ionic compounds contain metals and non-metals. Molecular compounds contain only non-metals. The bonds between metals and non-metals differ from the bonds between two or more non-metals. It is the difference between these types of bonds that give compounds their diverse physical properties.
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Valence Electrons Electrons found in the outer most energy level or shell These are the electrons that participate in bonding
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Lewis Structures Shows only valence electrons
Valence electrons are represented by dots The chemical symbol represents the nucleus (with neutrons and protons) and all the full valence shells
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Lewis Structures Electrons fill up one energy level before moving into the higher energy levels Energy levels 1st energy level – maximum 2 electrons 2nd energy level – maximum 8 electrons 3rd energy level – maximum 8 electrons
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Lewis Structures
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Lewis Structures Complete #2 – 4, page 164
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