New AP Chemistry Cirriculum What’s In What’s Out.

New AP Chemistry Cirriculum

What’s InWhat’s Out

The 6 Big Ideas1. Atomic Structure2. Bonding and Properties3. Reactions (including Electrochemistry)4. Kinetics5. Thermodynamics6. Chemical Equilibrium

Big Idea 1Atomic Structure

• The chemical elements are fundamental building materials of matter, and all matter can be understood in terms of arrangements of atoms. These atoms retain their identity in chemical reactions

• Includes atomic theory, mole-mass calculations, electronic configuration, periodicity

• Lab-wise: gravimetric analysis, titrations, Beer’s law

Big Idea 1 (Cont.)Atomic Structure

Exclusions:• Memorization of exceptions to Aufbau

principle, i.e., Cr and Cu, Mo and Ag• Assignment of quantum numbers to electrons

What’s Out: Content• Quantum Numbers

Big Idea 1 (Cont.)Atomic Structure

New or emphasized:• LO 1.5, 1.6, 1.7: Photoelectron Spectroscopy• LO 1.7, 1.8: Coulomb’s Law – attractive force due to

opposite charges vs distance• LO 1.13: Refining models• LO 1.14: Mass spectrometry for isotopes• LO 1.15: Vibration (IR) vs Electronic transition (UV-Vis)

Big Idea 2Bonding and Properties

• Chemical and physical properties of materials can be explained by the structure and the arrangement of atoms, ions, or molecules and the forces between them

• Includes solids, liquids, gases, solutions, inter-particulate forces, electronegativity, Lewis structures, VSEPR theory, bonding, properties

• Lab-wise: LO 2.7, 2.10: separation techniques especially chromatography and distillation; and LO 2.22: type of bonding

Big Idea 2 (Cont.)Bonding and Properties

Exclusions:• Phase Diagram (prior knowledge)• Colligative properties (prior knowledge)• Molality, percent by mass and by volume (prior

knowledge)• Weaker H-bonding with H not bonded to N, O, or F• Specific types of crystal structures, e.g. ABC, ABA, etc.


Exclusions (Cont.):• The use of formal charge to explain exception to octet rule

– but the use of formal charge calculation is still in• Learning how to defend the Lewis model, e.g. with odd

number of electrons• Hybridization beyond sp3

• Filling molecular orbital diagrams• Specific varieties of crystal lattices for ionic compound

What’s Out: Content• Hybridization beyond sp, sp2, and sp3

What’s Out: Content• Phase Diagram


New or emphasized:• LO 2.19, 2.21, 2.26: Macroscopic properties such as

viscosity, surface tension, capillary action, vapor pressure, boiling point, volumes of mixing for liquids, hardness

• LO 2.14: Coulombic forces as IMFs in biological systems and in hydrogen PE vs. nuclear distance

• LO 2.25, 2.26: Alloys• LO 2.30: Semi-conductors using Si

Big Idea 3Chemical Reactions

• Changes in matter involve the rearrangement and/or reorganization of atoms and/or the transfer of electrons

• Equation writing, stoichiometric calculations, Bronsted-Lowry acid-base theory, oxidation numbers, redox reactions, energies involved, electrochemistry

• Lab-wise: LO 3.5, 3.6: synthesis and decomposition reactions; LO 3.9: redox reactions; acid-base reactions

Big Idea 3 (Cont.)Chemical Reactions

Exclusions:• Lewis acid-base concepts (prior knowledge) but

complex ions and related solubility are included• Language of reducing agent and oxidizing agent• Labeling an electrode as positive or negative• Calculations using the Nernst equation is excluded

but qualitative reasoning about effects of concentration on cell potential is in

What’s Out: Content• Lewis definition of acids and bases

Also no more 5 choice multiple choice, only 4 choices!

Big Idea 3 (Cont.)Chemical Reactions

New or emphasized:• LO 3.1: Pictorial representation at the particulate level• LO 3.10: Classify physical change, chemical change, or

ambiguous change based on macroscopic observation and microscopic theory regarding bonding and interactions of particles

• LO 3.11: Graphical depiction of energy diagrams

Big Idea 4Kinetics

• Rates of chemical reactions are determined by details of the molecular collisions

• Includes factors affecting reaction rates, rate laws (both differential and integrated), collision theory, reaction mechanism, catalysis

• Lab-wise: LO 4.1: Exploration of factors affecting rate of reaction; Beer’s Law

Big Idea 4 (Cont.)Kinetics

Exclusions:• Arrhenius equation in calculations is out, but

conceptual aspects of the equation and graphical interpretation are still in

• Collection of data pertaining to experimental detection of a reaction intermediate

Big Idea 4 (Cont.)Kinetics

New or emphasized:• LO 4.7, 4.8: Catalysts function either by lowering

activation energy and keeping the same mechanism, or by altering the mechanism by forming an intermediate

• LO 4.9: Catalysis includes Acid-base catalysis, surface catalysis, enzyme catalysis

Big Idea 5Thermodynamics

• The laws of thermodynamics describe the essential role of energy and explain and predict the direction of changes in matter

• Includes kinetic theory, specific heat, heating curve, calorimetry and enthalpy changes, intermolecular forces, entropy, Gibb’s free energy, relation between ΔG and K

• Lab-wise: LO 5.7: calorimetry

Big Idea 5 (Cont.)Thermodynamics

Exclusions:• None

New or emphasized:• LO 5.1 Create or use graphical representations to connect the

dependence of potential energy to distance between atoms, and factors such as bond order and polarity that influence the interaction strength

• LO 5.2: Drawing of arrows to indicate particle velocities to relate temperature and motion


New or emphasized (Cont.):• LO 5.3: Heat transfer to establish equilibrium• LO 5.6: Heat and PV work in gas expansion and

contraction• LO 5.9, 5.10, 5.11: IMF in small and large molecules,

polymers, enzymes, biological molecules• LO 5.13, 5.14: The phrase “thermodynamically favored” in

place of “spontaneous”


New or emphasized (Cont.):• LO 5.15, 5.16, 5.17: External energy source or

coupling to make non-TF reactions occur, e.g. electrochemistry, light requirement in photosynthesis, ionization

Big Idea 6Chemical Equilibrium

• Any bond or intermolecular attraction that can be formed can be broken. These two processes are in a dynamic competition, sensitive to initial conditions and external perturbations

• Includes equilibrium, Le Chatelier’s principle, acid-base equilibria, pH, pOH, Kw, Ka, Kb, titration, buffers, Ksp, ΔG and K

• Lab-wise: LO 6.13: acid-base titration; LO 6.18: preparing a buffer

Big Idea 6 (Cont.)Chemical Equilibrium

Exclusions:• Numerical computation of concentrations of species

in titration of polyprotic acids• Computing the change in pH resulting from addition

of acid or base to a buffer• Production (derivation) of Henderson-Hasselbalch

equation from equilibrium constant expression


Exclusions (Cont.):• Memorization of solubility rules beyond Na, K, NH4,

and nitrates salts• Calculating solubility of salts as a function of pH• Calculating solubility of salts in pH-sensitive solutions


New or emphasized:• LO 6.11 Generate or use a particulate representation of

an acid (strong, weak, polyprotic) and a strong base to explain the major species at equilibrium

• LO 6.24 Analyze the enthalpic and entropic changes during dissolution of a salt, using particulate level interactions and representations

• LO 6.25: “Exergonic/endergonic”distinction in biological systems involving relationship of K and ΔG

Additional Content Deletion

• Organic Chemistry Nomenclature• Nuclear Chemistry• Complex Ion / Coordination Chemistry

Science Practices

• 7 Science Practices, p.185-189• Enable students to establish lines of evidence

and to develop and refine testable explanations and predictions

• Require students to think and conduct scientific investigations like working scientists

Science PracticesThe Student Can …

• SP1: Use representations and models to communicate scientific phenomena and solve scientific problems

• SP2: Use mathematics appropriately• SP3: Engage in scientific questioning to extend

thinking or to guide investigations• SP4: Plan and implement data collection strategies for

a scientific question

Science PracticesThe Student Can …

• SP5: Perform data analysis and evaluation of evidence

• SP6: Work with scientific explanation and theories• SP7: Connect and relate knowledge across various

scales, concepts, and representations in and across domains

Activity: Science Practices

• Example on Handbook p.7• Answer questions on p.8 in your group

Science Practices Not Emphasized in Textbooks

• 1.3: The student can refine representations and models of natural or man-made phenomena and systems in the domain

• 1.4:The student can use representations and models to analyze situations or solve problems qualitatively and quantitatively

• 2.1:The student can justify the selection of a mathematical routine to solve problems

• 3.1-3.3:The student can pose, refine, and evaluate scientific questions

Science Practices Not Emphasized in Textbooks

• 4.1:The student can justify the selection of the kind of data needed to answer a particular scientific question

• 4.2:The student can design a plan for collecting data to answer a particular scientific question

• 5.3:The student can evaluate the evidence provided by data sets in relation to a particular scientific question

• 6.5:The student can evaluate alternative scientific explanations • 7.1:The student can connect phenomena and models across

spatial and temporal scales

What’s Out: Content• Nuclear reactions

• Flame Colors

What’s Out: Content• Memorization of Conclusions

What’s Out: Question Type

What’s Out: Content & Question Type

Correct statements about alpha particles include which of the following?

I. They have a mass number of 4 and a charge of +2.

II. They are more penetrating than beta particles.

III. They are helium nuclei.

(A) I only (B) III only (C)I and II

(D) I and III (E) II and III

New AP Chemistry Cirriculum What’s In What’s Out.

Documents

Transcript of New AP Chemistry Cirriculum What’s In What’s Out.