Compounds and chemical formulas | Middle school chemistry | Khan Academy скачать в хорошем качестве

Compounds and chemical formulas | Middle school chemistry | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now:https://www.khanacademy.org/science/m... Want to explore more? Check out the full middle school playlist here:    • Middle school chemistry | Khan Academy   Some substances, like copper or gold, are pure elements. Others, like water (H₂O), are compounds—made from two or more elements in fixed ratios, chemically bonded. Each compound has a unique formula, like CO₂ for carbon dioxide, representing its specific atomic arrangement. Compounds form molecules, tightly bonded units, creating an incredible diversity of substances in nature. 00:00 Intro 00:30 Compounds & elements 01:40 Compounds & molecules 03:00 More examples of compounds 03:58 Chemical formulas of compounds 05:36 Summary Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://donate.khanacademy.org/give/4... Volunteer here: https://www.khanacademy.org/contribut...