https://www.khanacademy.org/science/bmc-grade-9-science/x345505a97fc4a662:carbon-an-important-element/x345505a97fc4a662:carbon-dioxide/v/carbon-dioxide 2026-02-09T06:51:45.841078978Z Carbon Dioxide Master the basics of Carbon Dioxide! Learn about its properties, lab preparation using upward displacement of air, and real-world uses like dry ice and fire extinguishers. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Carbon Dioxide Master the basics of Carbon Dioxide! Learn about its properties, lab preparation using upward displacement of air, and real-world uses like dry ice and fire extinguishers. 792 Carbon Dioxide https://www.khanacademy.org/science/bmc-grade-9-science/x345505a97fc4a662:carbon-an-important-element/x345505a97fc4a662:carbon-dioxide/e/carbon-dioxide 2026-02-09T06:51:45.841078978Z Carbon Dioxide This exercise covers key concepts of carbon dioxide from Class 9 Science, including its laboratory preparation, physical and chemical properties, major reactions, and everyday uses, supported with visuals for clearer understanding. Yajurva Joshi exercise https://www.khanacademy.org/science/bmc-grade-9-science/x345505a97fc4a662:carbon-an-important-element/x345505a97fc4a662:carbon-dioxide/e/fire-extinguisher 2025-12-18T18:40:53.641757593Z Fire extinguisher This exercise explores how regular fire extinguishers work, why carbon dioxide is effective in putting out fires, the chemical principles behind their operation, and the safety considerations involved, based on the Class 9 Science section “Regular fire extinguisher.” Yajurva Joshi exercise