answer:From the provided content and according to the guidance by the experienced teacher, here are the essential concepts you need to focus on: 1. **SAP-2.A.1 - Organization of the Periodic Table**: - Understand that the arrangement of elements in the periodic table is based on both their physical and chemical properties, which repeat in a pattern known as periodicity. - Comprehend that this periodicity is explained by the electron configurations of elements, where a pattern of completely or partially filled electron shells and subshells emerges. 2. **SAP-2.A.2 - Trends in Atomic Properties (Periodicity)**: - Learn the key trends in atomic properties, such as ionization energy, atomic and ionic radii, electron affinity, and electronegativity. - Grasp how these properties are influenced by an element’s position in the periodic table, the force exerted by the positive nucleus on the negative electrons (as described by Coulomb’s law), the shell model of atomic structure, and the concept of effective nuclear charge and shielding by inner electrons. 3. **SAP-2.A.3 - Predicting Properties Using Periodicity**: - Utilize periodic trends to predict or estimate the values of properties for elements, even in the absence of specific experimental data. - Apply qualitative understanding of periodic trends to make educated guesses about unknown or unmeasured atomic properties. Guided by the experienced teacher’s advice: - **Interpretation Over Literal Phrasing**: Recognize that some content is not explicitly stated in the CED. The ability to conceptually link aspects of the curriculum, such as the electron configuration's connection to periodic trends, is crucial. - **Teach for Conceptual Understanding**: Instead of teaching exceptions or memorization of electron configurations, focus on the underlying principles that explain periodic trends. Understanding these principles allows students to reason through questions rather than relying on rote memorization. - **Contextual Connections**: Relate the periodic table's organization and the recurring properties of elements to real-world chemical behavior and reactions. For example, explaining how atomic size affects reaction rates or how ionization energy influences chemical bonding. - **Practical Application**: Highlight the practical use of periodic trends to predict the chemical and physical behavior of elements. For instance, knowing how electronegativity varies across the periodic table can be used to predict the type of bond (ionic or covalent) most likely to form between two elements. - **Educational Value Beyond Direct Examination**: Recognize that while some specific tasks, such as writing electron configurations for elements which are exceptions to the Aufbau principle, are not assessed, these principles still have instructional value. Teach them in a way that reinforces the broader understanding of electronic structure and periodic behavior. In summary, when teaching AP Chemistry, it's important to convey in-depth knowledge of how electron configurations and periodic trends explain the recurring properties of elements. This knowledge should be taught not by focusing solely on what is or isn't listed in the CED, but by emphasizing context, conceptual understanding, and practical application in chemistry. This approach ensures students develop a rich and transferable understanding of the subject, preparing them for various aspects of the AP Chemistry exam and beyond.

answer:From the excerpt provided by the experienced AP Chemistry teacher and the content listed, here are the essential things you should learn: 1. **Understanding of the Periodic Table Structure and Electron Configurations (SAP-2.A.1):** You need to understand how the periodic table is organized and the rationale behind it. This includes the concept of electron configurations and how the distribution of electrons in shells and subshells leads to the recurring properties of elements. However, you do not need to memorize the exceptions to the Aufbau principle as writing these configurations will not be assessed on the AP exam. This is because the AP Chemistry course focuses more on understanding and applying principles rather than rote memorization of exceptions. 2. **Periodic Trends and Their Explanation (SAP-2.A.2):** Be familiar with the trends in atomic properties within the periodic table and be able to qualitatively understand these through the element’s position in the periodic table. This understanding should be grounded in concepts such as Coulomb’s law, the shell model, and the concept of shielding/effective nuclear charge. Focus on trends like: - Ionization energy - Atomic and ionic radii - Electron affinity - Electronegativity 3. **Application and Prediction Using Periodic Trends (SAP-2.A.3):** You should be able to apply your understanding of periodicity to predict or estimate values of properties when data is not available. This means using the knowledge of trends to make educated guesses about the properties of elements based on their position in the periodic table. In the broader context of teaching the AP Chemistry course, it is important to keep the following in mind: - **Integrated Understanding Over Literal Content:** While it is important to understand the content of the CED, the teacher emphasizes the value of teaching and understanding topics that may not be explicitly listed by their common names or phrases but are relevant because they involve applications of explicitly listed content. For example, combustion analysis may not be found by a keyword search in the CED, but it is relevant because it involves stoichiometry, mole calculations, and determining empirical or molecular formulas — all concepts that are within the framework of the AP Chemistry course. - **Teaching Beyond the CED:** Certain topics like balancing REDOX reactions in acid and base solutions are suggested to be taught not because they are likely to appear in their own right on the exam, but because they offer significant educational value and reinforce other areas of the curriculum. The understanding and skills gained from such topics can enhance a student's overall competence in chemistry. To summarize, focus on deeply understanding the principles behind the organization of the periodic table, periodic trends, and their implications, rather than just memorizing facts. Use the CED as a guide but also recognize the importance of integrating and applying these concepts in various contexts, as this is where their true educational value lies.

answer:1. **The Black Cauldron (1985) - Main Character: Taran** - Dialogue Line: "I know our journey to find the Black Cauldron may not be the most famous tale, but knowing you shared in our adventure warms my heart. Your care has given me and my friends the courage we need to keep going. Thank you." 2. **The Great Mouse Detective (1986) - Main Character: Basil** - Dialogue Line: "Ah, I perceive that you are a person of considerable intellect, for you have taken the time to appreciate our less-celebrated mystery. Thank you for joining us in our quest to defeat the nefarious Ratigan and for recognizing the finer details of our sleuthing saga." 3. **Atlantis: The Lost Empire (2001) - Main Character: Milo Thatch** - Dialogue Line: "Our expedition may not be in every history book or the topic of every conversation, but your interest in Atlantis has made all the difference in the world to me. Thank you for believing in the city, in our story, and in our team's dream." 4. **Treasure Planet (2002) - Main Character: Jim Hawkins** - Dialogue Line: "Settin' sail across the universe hunting for Flint's trove, I never figured on folks like you carin' so much about our tale. You've made my heart hoist its sails! Thanks for bein' part of our crew and takin' on the stars with us." 5. **Brother Bear (2003) - Main Character: Kenai** - Dialogue Line: "It looks like our path has led us to someone who truly understands the spirit of the journey. Your warmth reminds me of the light that changed my own heart. Thank you for walking with us and for seeing the beauty in nature's grand circle of life." 6. **Meet the Robinsons (2007) - Main Character: Lewis ** - Dialogue Line: "I may be an inventor with an eye to the future, but I know that the moments we cherish most are the ones we share with friends like you. Thanks for believing in me, caring about my story, and reminding me to keep moving forward!"

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