Day 3 NotesIntermolecular Forces 1920 COMPLETE.notebook March 11, 2020 Daily Quiz 3/11 Turn in homework 79. 80. 81. 82. 83. Reminders 3/11/20 Today Tacky Tourist Day Tomorrow Famous Person Day Friday World Language TShirt Day Academic Overtime Saturday (3/14) 10am2pm ECPI Student/Parent Interest Meeting Wednesday (3/11) @ 6pm Activity Period Friday (3/13) Meg Jenkins Color Run Prom Saturday (3/28) FFA Spring Foxtival Saturday (3/14) 9am2pm Quarter 3 Test Tuesday 3/17 Quarter 3 Practice Quia due MONDAY night (3/16) https:// www.quia.com/quiz/7639479.html Part 2 Notes: Types of Intermolecular Forces Unit 9: Intermolecular Forces 20192020 CP Chemistry Pay Attention There are 2 terms that we are getting ready to discuss that sound very similar, but have completely different meanings. Make sure you are communicating the right term at the right time. Intramolecular ForceGorilla Glue • Ionic or covalent BONDS • Attractive forces between ions or atoms within a compound • Relatively strong • Takes a lot of energy to break a bond • 4000 kJ ionic compounds • 1100 kJ covalent compounds Intermolecular ForceElmer's Glue • Attractive forces between molecules • Strength is weaker than ionic or covalent bond • Responsible for the state of matter at room temperature • Amount of energy to overcome intermolecular forces > 0.0540 kJmatter without ions > 600 kJmatter with ions
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Day 3 NotesIntermolecular Forces 1920 COMPLETE.notebook March 11, 2020
Activity Period Friday (3/13) Meg Jenkins Color Run
Prom Saturday (3/28)
FFA Spring Foxtival Saturday (3/14) 9am2pm
Quarter 3 Test Tuesday 3/17
Quarter 3 Practice Quia due MONDAY night (3/16) https://www.quia.com/quiz/7639479.html
Part 2 Notes: Types of Intermolecular Forces
Unit 9: Intermolecular Forces
20192020 CP Chemistry
Pay AttentionThere are 2 terms that we are getting ready to discuss that sound very similar, but have completely different meanings. Make sure you are communicating the right term at the right time. Intramolecular ForceGorilla Glue
• Ionic or covalent BONDS• Attractive forces between ions or
atoms within a compound• Relatively strong• Takes a lot of energy to break a
4. PCl35. Are these molecules polar or nonpolar?6. Can these molecules hydrogen bond to each other?7. What type of intramolecular forces are present in each
molecule?
Objectives and Indicators
1. Differentiate between intramolecular and intermolecular forces.2. Use lab data to compare different types of intermolecular forces.
Essential Question: How and why do molecules stick together?
• H.C.3A.4: Plan and conduct controlled scientific investigations to generate data on the properties of substances and analyze the data to infer the types of bonds—ionic, polar covalent, and nonpolar covalent.
• H.C.4A.1: Develop and use models to explain the arrangement and movement of the particles in solids, liquids, gases, and plasma as well as the relative strengths of their intermolecular forces.
• IV.3.a: Describe the characteristics of ionic and covalent bonding• IV.3.f: Compare the different types of intermolecular forces• IV.3.h: Describe the unique physical and chemical properties of water resulting from hydrogen bonding
1. Is this molecule polar or nonpolar?2. What is the VSEPR geometry?3. Can this molecule hydrogen bond with another CH2O
molecule?4. Can this molecule hydrogen bond with H2S?5. Can this molecule hydrogen bond with NH3?
Day 3 NotesIntermolecular Forces 1920 COMPLETE.notebook March 11, 2020
Concept Check: Which picture correctly shows water as it is vaporized?
Changes in the state of matter involve _____________ forces.
Methanol 1‐propanolhexane
ethanol butanol pentane
Background‐ Vaporization: phase change from a liquid to a gas
‐ Evaporation: vaporization at the surface of the liquid ‐ endothermic process‐‐requires energy ‐ must overcome intermolecular forces of attraction
‐ stronger IMFs = slower rate of evaporation and less change in temperature
‐ weaker IMFs = faster rate of evaporation and greater change in temperature
Purpose: Use lab data to rank the relative strengths of the intermolecular forces present in different liquids