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 Physical and chemical changes 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 Physical and chemical changes 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 Physical and chemical changes 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 Physical and chemical changes 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 Physical and chemical changes 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/strengthened-shs-chemistry-1/x174677b2bfa4bea2:measurements-in-chemistry/x174677b2bfa4bea2:types-of-chemical-bonding/v/physical-and-chemical-changes-changes-around-us-grade-7-science-khan-academy 2025-07-29T05:17:01.905978144Z Physical and Chemical Changes In this video, we explore how everyday processes—like lighting a candle, cooking veggies, or setting off fireworks—can involve both physical and chemical changes happening at the same time. Bitasta Datta video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Physical and Chemical Changes In this video, we explore how everyday processes—like lighting a candle, cooking veggies, or setting off fireworks—can involve both physical and chemical changes happening at the same time. https://cdn.kastatic.org/ka-youtube-converted/aMhvVfkJpUM.mp4/aMhvVfkJpUM.mp4 207 Physical and chemical changes 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