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Preparing to study chemistry (article) | Khan Academy
WEBCourse: AP®︎/College Chemistry > Unit 1. Lesson 1: Introduction to the atom. Preparing to study chemistry. Introduction to chemistry. Elements and atoms. Atomic number, mass number, and isotopes. Average atomic mass. The mole and Avogadro's number. Isotopes and mass spectrometry.
Introduction to entropy (video) | Entropy | Khan Academy
WEBCourse: AP®︎/College Chemistry > Unit 9. Lesson 1: Entropy. Introduction to entropy. Absolute entropy and entropy change.
Introduction to entropy (video) | Khan Academy
WEBIntroduction to entropy, and how entropy relates to the number of possible states for a system.
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WEBMetabolism refers to the set of chemical reactions that occur within living organisms to maintain life. Anabolism is the process of building up larger, more complex molecules from smaller ones. This process requires energy. Catabolism is the process of breaking down larger molecules into smaller ones.
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WEBNossa missão é oferecer uma educação gratuita e de alta qualidade para qualquer pessoa, em qualquer lugar.
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WEBKhanmigo is now free for all US educators! Plan lessons, develop exit tickets, and so much more with our AI teaching assistant.
可汗学院 - Khan Academy
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Introduction to macromolecules (article) | Khan Academy
WEBCourse: AP®︎/College Biology > Unit 1. Lesson 3: Introduction to biological macromolecules. Ionic bonds. Covalent bonds. Chemical bonds.