https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-reactions/x2613d8165d88df5e:representing-chemical-reactions/v/physical-and-chemical-changes 2023-12-15T18:39:28.793791463Z Physical and chemical changes Physical and chemical processes can be classified by the changes occurring on the molecular level. In general, chemical processes involve changes in chemical bonds, while physical processes involve changes only in intermolecular forces. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/13f405e4-0927-4fb9-9b5e-913f069d17f9_1280_720_base.png Physical and chemical changes Physical and chemical processes can be classified by the changes occurring on the molecular level. In general, chemical processes involve changes in chemical bonds, while physical processes involve changes only in intermolecular forces. https://cdn.kastatic.org/ka-youtube-converted/n5cZ5CWuUJA.mp4/n5cZ5CWuUJA.mp4 279 Changes around us https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:physical-and-chemical-changes/x0c8b40bd4b242f0b:physical-and-chemical-changes-with-examples/e/physical-and-chemical-change 2026-03-27T14:53:23.229071668Z Physical and chemical changes Let's practice to differentiate between a physical change and a chemical change by solving the given questions. exercise https://www.khanacademy.org/science/revision-term-1-ka-science-class-7/x05832cca8e86a1ef:week-2/x05832cca8e86a1ef:physical-and-chemical-changes/e/physical-and-chemical-changes-in-daily-life 2026-04-07T22:59:30.107127435Z Identify if a change is physical or chemical Let's solve some questions on distinguishing physical and chemical changes in daily life Vibhor Pandey exercise https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:physical-and-chemical-changes/x0c8b40bd4b242f0b:physical-and-chemical-changes-with-examples/v/melting-wax-vs-burning-candle 2023-06-26T04:10:39.513125705Z Melting wax vs Burning candle Let's identify which one's a physical change and which one's a chemical change! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Melting wax vs Burning candle Let's identify which one's a physical change and which one's a chemical change! https://cdn.kastatic.org/ka-youtube-converted/ihInc2txR2E.mp4/ihInc2txR2E.mp4 275 Changes around us https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:physical-and-chemical-changes/x0c8b40bd4b242f0b:physical-and-chemical-changes-with-examples/v/salt-in-water-vs-burning-magnesium 2023-06-26T04:10:39.513125705Z Salt in water vs Burning magnesium Which one's a physical change and which one's a chemical change? We have two cases here, dissolved salt in water and burning magnesium. Let's find out! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Salt in water vs Burning magnesium Which one's a physical change and which one's a chemical change? We have two cases here, dissolved salt in water and burning magnesium. Let's find out! https://cdn.kastatic.org/ka-youtube-converted/mkNIwnQcQf8.mp4/mkNIwnQcQf8.mp4 196 Changes around us https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:physical-and-chemical-changes/x0c8b40bd4b242f0b:physical-and-chemical-changes-with-examples/v/heating-iron-vs-rusting-iron 2023-06-26T04:10:39.513125705Z Heating iron vs rusting iron Which one's a physical change and which one's a chemical change? We have two cases here, heating iron and rusting of iron. Let's find out! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Heating iron vs rusting iron Which one's a physical change and which one's a chemical change? We have two cases here, heating iron and rusting of iron. Let's find out! https://cdn.kastatic.org/ka-youtube-converted/myVAl8ThR80.mp4/myVAl8ThR80.mp4 112 Changes around us https://www.khanacademy.org/science/revision-term-1-ka-science-class-7/x05832cca8e86a1ef:week-2/x05832cca8e86a1ef:physical-and-chemical-changes/v/deformation-vs-food-spoilage 2023-06-26T04:10:39.513125705Z Deformation vs Food Spoilage Which one's a physical change and which one's a chemical change? We have two cases here, deformation of a solid and spoilage of food. Let's find out! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Deformation vs Food Spoilage Which one's a physical change and which one's a chemical change? We have two cases here, deformation of a solid and spoilage of food. Let's find out! https://cdn.kastatic.org/ka-youtube-converted/Gmur3Q9M0PA.mp4/Gmur3Q9M0PA.mp4 149 Changes around us https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:physical-and-chemical-changes/x0c8b40bd4b242f0b:physical-and-chemical-changes-with-examples/v/dissolving-sugar-vs-burning-sugar 2023-06-26T04:10:39.513125705Z Dissolving sugar vs Burning sugar Which one's a physical change and which one's a chemical change? We have two cases here, Dissolving sugar and burning sugar. Let's find out! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Dissolving sugar vs Burning sugar Which one's a physical change and which one's a chemical change? We have two cases here, Dissolving sugar and burning sugar. Let's find out! https://cdn.kastatic.org/ka-youtube-converted/OLoofqhK2GM.mp4/OLoofqhK2GM.mp4 134 Changes around us https://www.khanacademy.org/science/revision-term-1-ka-science-class-7/x05832cca8e86a1ef:week-2/x05832cca8e86a1ef:physical-and-chemical-changes/v/crystallization-vs-growth-of-plant-from-seed 2023-06-26T04:10:39.513125705Z Crystallization vs growth of plant from seed Let's see which one's a physical change and which one's a chemical change! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Crystallization vs growth of plant from seed Let's see which one's a physical change and which one's a chemical change! https://cdn.kastatic.org/ka-youtube-converted/C4DjAckefH0.mp4/C4DjAckefH0.mp4 237 Changes around us https://www.khanacademy.org/science/up-science-grade-6-revision-course-full-term/x017c12e57b64cfa8:week-1/x017c12e57b64cfa8:changes-in-neigbourhood/e/differentiate-between-physical-and-chemical-changes 2026-04-08T00:54:09.631945657Z Differentiate between physical and chemical changes LO2: Physical and chemical changes Revathi exercise