Middle school chemistry | Khan Academy - Types of mixtures | 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/ms-chemistry Want to explore more? Check out the full middle school playlist here: https://www.youtube.com/playlist?list=PLSQl0a2vh4HBnhjPgsJU2y1UhMwcYmb5u A mixture is a physical blend of two or more substances, unlike pure substances such as elements or compounds. Homogeneous mixtures are uniform throughout, with components evenly distributed at a molecular level, while heterogeneous mixtures have visible separation between components. Physical properties like density or solubility allow separation without a chemical reaction. Examples include salt water (homogeneous) and oil and water (heterogeneous). 00:00 Intro 00:29 Elements, Compounds & Mixtures 01:37 Difference between compounds & mixtures 02:32 Homogeneous mixtures 03:18 Heterogeneous mixtures 03:58 Identifying the type of mixture 05:15 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/419869/#!/donation/checkout Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc