Download Thermochemistry - Lincoln

Department: LW Science
Understanding by Design
Course: AP Chemistry
Standard(s):
State Frameworks
12.11.47 Understand the different states of matter: solid, liquid, gas, plasma. Define freezing, melting, boiling,
condensing, and sublimation
12.11.48 Understand that the temperature of water (or any substance) is constant during phase changes, even when heat is
being added or removed.
12.11.59 Understand that energy is exchanged or transformed in all chemical reactions and physical changes of matter.
Understand that chemical processes can either release (exothermic) or absorb (endothermic) thermal energy. Understand
that energy is released when a material condenses or freezes and is absorbed when a material evaporates, melts, or
sublimes.
12.11.64 Understand that energy, defined somewhat circularly, is “the ability to change matter,” or “the ability to do
work.” Understand that energy is defined by the way it is measured or quantified. Understand the difference between
potential and kinetic energy.
12.11.67 Know the first two laws of thermodynamics: (1) Energy is conserved (neither created nor destroyed) and (2)
Heat flows naturally from a hot object to a cold object; heat will not flow spontaneously from a cold object to a hot
object. Understand that another statement of the Second Law is that no device is possible whose sole effect is to
transform a given amount of heat completely into work.
12.11.68 Recount the concept of entropy and know that entropy in the universe considered as a whole always increases.
National Standards
NSES B5a The total energy of the universe is constant. Energy can be transferred by collisions in chemical and nuclear
reactions, by light waves and other radiations, and in many other ways. However, it can never be destroyed. As these
transfers occur, the matter involved becomes steadily less ordered.
NSES B5b All energy can be considered to be either kinetic energy, which is the energy of motion; potential energy,
which depends on relative position; or energy contained by a field, such as electromagnetic waves.
NSES B5c Heat consists of random motion and the vibrations of atoms, molecules, and ions. The higher the temperature,
the greater the atomic or molecular motion.
Math State Frameworks
6.11.15 Judge the reasonableness of solutions, and find mistakes in calculation, logic, and formula application.
.
Stage 1: Desired Results
Understandings
S
T
A
G
E
1
1. Be able to convert between units of energy.
2. Be able to differentiate between the system and surroundings.
3. Understand the heat exchange between the system and surrounding for endothermic and exothermic processes.
4. Differentiate between endothermic (heat absorbed; q = +, ∆H = +; Tsystem increases) and exothermic (heat released; q
= -; ∆H = -; Tsystem decreases) processes.
5. Understand which changes in the state of matter are endothermic and which are exothermic.
6. Be able to differentiate between an endothermic and exothermic reaction profile.
7. Understand the enthalpy term and how it relates to energy. Understand how enthalpy is a general term and can be
applied to both physical and chemical processes.
8. Understand how energy relates to heat and work. Be able to use ∆E = q + w.
9. Perform calculations using specific heat, heat capacity, and molar heat capacity. Know the units for each of these
terms and be able to convert between each of these terms.
10. Draw, label, and perform associated calculations for heating and cooling curves involving specific heat and changes
in enthalpy for phase changes.
11. Understand how a calorimeter is used and perform related calculations.
12. Differentiate between a coffee-cup and bomb calorimeter. Perform calculations related to each type of
calorimeter.
Essential Questions
Knowledge & Skill
1.
Compare & contrast the different states of matter
and the changes they undergo.
Using established learning targets to guide the unit, the
accompanying knowledge & skill sheet establishes the
goals set by the course
Stage 2: Assessment Evidence
Test, quizzes, labs, homework, worksheets (see district curriculum folder).
S
T
A
G
E
2
Performance Task Summary
Rubric Titles
Quizzes
Practice problems
Labs
Unit test
Self-Assessments
Self evaluation of "I Can" statements on K&S sheet.
Other Evidence, Summarized
"Other assessment information will be obtained through
observations, classroom participation, class discussion &
interactions, and scaffold learning." The final will be
analyzed with Mastery Manager for teachers to improve
future instruction.
Stage 3: Learning Activities
S
T
A
G
E
3
See District Curriculum folder. The following activities are labeled UBD:
UBD - Determination of Specific Heat of Metal
UBD- Determination of Heat of Solution
UBD- Hess's Law Lab