Energy - (Thermochemistry)
Learning Targets:
Outline:
Reaction Puzzle 1: Dye diffusion in hot vs cold water
Reaction Puzzle 2: Rate of temperature change of water vs ethanol (or methanol)
Group learning: Calorimetry here
Lab practical: Predict temperature gain of cold water when combined with hot metal (Lab or simulation)
Lecture 1: Thermal Energy / Interaction Energy (slides)
Practice Problems Homework here
Group Learning: Bond Energy here and practice here
Reaction Puzzle 3: Endothermic and exothermic rxns (Lab)
Lecture 2: Covalent Energy / Phase diagrams/Hess' law/heat of formation
--- Same Slide pack as above Hess, Homework and additional practice
Infographic Student Investigation and Presentation (explanation here)
Confirmation experiment: Experimental confirmation of Hess' law (Vernier Lab)
Practice Phase diagrams (here) and energy of phase changes (here)
Reaction Puzzle: Explain freezing of water (Lab)
Culminating experiment: Calorimetry (Lab)
Alternative assignments:
Reaction Puzzle 1: Boundless
Reaction Puzzle 2: ChemQuest - Specific Heat
Lab practical: SkillsPractice - Specific Heat
Reaction Puzzle 3: Endo-Exo thermic worksheet
Lecture 1: no alternative - see slides
Reaction Puzzle 4: ChemQuest - Energy and Changes in matter
Lecture 2: ChemQuest - Phase Diagrams
ChemQuest - Thermodynamics
Confirmation experiment: ChemQuest - Hess' Law
Culminating experiment: Fake data for lab
Homework
Text Resources
Vocabulary:
Alternate Powerpoint:
Chapter 13: section_1, section_2, section_3, section_4
Chapter 17: section_1, section_2, section_3, section_4
Key Objectives: Unit 6
Chemistry - Wilbraham et al (Pearson 2012)
Chapters:
17
Good Problems to Master:
17: 42,45,46,49,50,52,55,59,61,62,63,65,66,69,71,73,78,79,82,83,84
- Be able to describe the Kinetic Molecular Theory
- Be able to explain the Maxwell Boltzman distribution
- Be able to provide molecular descriptions of solids, liquids, gases and vapor pressure
- Be able to use specific heat to determine energy changes due to temperature changes
- Be able to use enthalpy to describe energy changes of reactions
- Be able to distinguish between thermal energy and energy of interactions
- Be able to use enthalpy to describe phase changes
- Be able to calculate energy with multiple phases
- Be able to interpret phase change diagrams
- Be able to use Hess’ law to find enthalpy of a reaction
- Be able to use standard enthalpy of formation to find enthalpy of a reaction
- Be able to use bond energy to find enthalpy of a reaction
Outline:
Reaction Puzzle 1: Dye diffusion in hot vs cold water
Reaction Puzzle 2: Rate of temperature change of water vs ethanol (or methanol)
Group learning: Calorimetry here
Lab practical: Predict temperature gain of cold water when combined with hot metal (Lab or simulation)
Lecture 1: Thermal Energy / Interaction Energy (slides)
Practice Problems Homework here
Group Learning: Bond Energy here and practice here
Reaction Puzzle 3: Endothermic and exothermic rxns (Lab)
Lecture 2: Covalent Energy / Phase diagrams/Hess' law/heat of formation
--- Same Slide pack as above Hess, Homework and additional practice
Infographic Student Investigation and Presentation (explanation here)
Confirmation experiment: Experimental confirmation of Hess' law (Vernier Lab)
Practice Phase diagrams (here) and energy of phase changes (here)
Reaction Puzzle: Explain freezing of water (Lab)
Culminating experiment: Calorimetry (Lab)
Alternative assignments:
Reaction Puzzle 1: Boundless
Reaction Puzzle 2: ChemQuest - Specific Heat
Lab practical: SkillsPractice - Specific Heat
Reaction Puzzle 3: Endo-Exo thermic worksheet
Lecture 1: no alternative - see slides
Reaction Puzzle 4: ChemQuest - Energy and Changes in matter
Lecture 2: ChemQuest - Phase Diagrams
ChemQuest - Thermodynamics
Confirmation experiment: ChemQuest - Hess' Law
Culminating experiment: Fake data for lab
Homework
- Part 1 here
- Part 2 here
Text Resources
- Chapter 9 in OpenStax Chemistry Atoms First text chapter 9
Vocabulary:
- Kinetic energy
- Kinetic molecular theory
- Vaporization
- Evaporation
- Vapor pressure
- Boiling point
- Melting point
- Freezing point
- Sublimation
- Phase diagram
- Triple point
- Thermochemistry
- Chemical potential energy
- Heat
- System / surroundings
- Law of conservation of energy
- Endothermic
- Exothermic
- Heat capacity
- Specific heat
- Calorimetry
- Enthalpy
- Thermochemical equation
- Heat of reaction
- Heat of combustion
- Molar heat of fusion
- Molar heat of solidification (fusion)
- Molar heat of vaporization
- Molar heat of condensation
- Molar heat of solution
- Hess’ law
- Standard enthalpy of formation
Alternate Powerpoint:
Chapter 13: section_1, section_2, section_3, section_4
Chapter 17: section_1, section_2, section_3, section_4
Key Objectives: Unit 6
Chemistry - Wilbraham et al (Pearson 2012)
Chapters:
17
Good Problems to Master:
17: 42,45,46,49,50,52,55,59,61,62,63,65,66,69,71,73,78,79,82,83,84