151F09_W12_LV_3_post

151F09_W12_LV_3_post - General Chemistry CHEM 151 Week 12...

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UA GenChem General Chemistry General Chemistry CHEM 151 CHEM 151 Week 12
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UA GenChem Exam 3 – Monday Nov. 16th Electron dots we can see will be counted! Include ALL electrons in a Lewis structure ! Don’t forget brackets and arrows in resonance structures Remember brackets with outside charges for charged molecules Properties and types of substances will be on this exam (i.e. does not conduct electricity as a solid but does when dissolved = ionic compound.) DO THE OLD EXAM AND PRACTICE SETS!!!
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UA GenChem Letter (A,B, etc.) (2pt) Substance Ionic, Metallic or Molecular (covalent) (1pt after correct Letter) Alcohol (CH 3 OH) potassium paraffin wax (C 30 H 62 ) aluminum NiBr 2 From Exam 2 Spring 19 ) (15 pts) Here are some properties of several different materials. •High melting point, conducts electricity as a solid, is malleable. •A liquid at room temperature and does not conduct electricity. . •High melting point, does NOT conduct electricity as a solid but does if dissolved in water. •A solid at room temperature, does not conduct electricity as a solid, and has a low melting point. •Conducts electricity as a solid and can form an ionic compound with O in a 2:1 ratio. Based on the information provided, fill in the table with the properties from above. Fill in the last column with ionic, metallic or molecular (covalent)
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UA GenChem Increasing Intermolecular Forces
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UA GenChem Aqueous Solutions A variety of molecular and ionic compounds are soluble in water. Their solubility depends on the strength of the intermolecular forces between particles in the system. A solution is a homogeneous mixture composed of both: solute - (the substance that has been dissolved) and solvent - (the substance in which the solute has been dissolved). solvent solute
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UA GenChem Solubility and H-bonding H-bond H-bond - - δ δ + + δ δ - - δ δ NH NH 3 3 in H in H 2 O O H-bond H-bond - - δ δ + + δ δ - - δ δ CH CH 3 OH in H OH in H 2 O O H-bonding plays a central role in the solubility of many molecular compounds in water.
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151F09_W12_LV_3_post - General Chemistry CHEM 151 Week 12...

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