https://www.khanacademy.org/science/ms-chemistry/xc370bc422b7f75fc:physical-properties-of-matter/xc370bc422b7f75fc:intrinsic-and-extrinsic-properties/v/physical-properties 2025-02-13T17:59:34.347326855Z Physical properties Properties are characteristics that define substances, helping us differentiate them. Physical properties, like color, density, and magnetism, can be observed or measured without changing the substance. These properties are further classified into intrinsic (independent of size, like color) and extrinsic (size-dependent, like mass). Understanding these helps identify and describe materials effectively. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/faa5709e-d110-46f7-827f-bef93b8ae47f_1280_720_base.png Physical properties Properties are characteristics that define substances, helping us differentiate them. Physical properties, like color, density, and magnetism, can be observed or measured without changing the substance. These properties are further classified into intrinsic (independent of size, like color) and extrinsic (size-dependent, like mass). Understanding these helps identify and describe materials effectively. https://cdn.kastatic.org/ka-youtube-converted/UIoepmPCXOY.mp4/UIoepmPCXOY.mp4 397 Physical changes https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemical-reactions/x8bc8fb44369617ed:physical-and-chemical-changes/v/physical-changes 2025-02-13T17:59:34.347326855Z Physical changes Physical changes alter the appearance or state of matter without changing its identity. Whether bending copper wire, crushing salt, freezing water, or dissolving salt into water, the substances retain their original forms, like H₂O or NaCl. Understanding physical changes helps identify substances through properties like melting and boiling points, which are inherent and consistent across samples. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/d873dd6b-08cf-4f7e-8fc0-4d02e97127ad_1280_720_base.png Physical changes Physical changes alter the appearance or state of matter without changing its identity. Whether bending copper wire, crushing salt, freezing water, or dissolving salt into water, the substances retain their original forms, like H₂O or NaCl. Understanding physical changes helps identify substances through properties like melting and boiling points, which are inherent and consistent across samples. https://cdn.kastatic.org/ka-youtube-converted/jn-skkO5NNI.mp4/jn-skkO5NNI.mp4 318 Physical changes https://www.khanacademy.org/science/ms-chemistry/xc370bc422b7f75fc:physical-properties-of-matter/xc370bc422b7f75fc:intrinsic-and-extrinsic-properties/a/physical-properties-and-changes 2026-04-22T04:30:43.362363602Z Learn and try: Physical properties and changes Learn about the observable characteristics of matter such as color, texture, melting point, and conductivity that can be measured without changing the substance's identity. Discover how physical changes like cutting, melting, and dissolving alter the appearance or state of matter while keeping the same chemical composition. article https://www.khanacademy.org/science/ms-chemistry/xc370bc422b7f75fc:physical-properties-of-matter/xc370bc422b7f75fc:intrinsic-and-extrinsic-properties/e/understand-physical-properties-extrinsic-intrinsic 2026-06-29T17:40:41.821508738Z Understand: Physical properties and changes Check your understanding of physical properties in this set of free, standards-aligned practice questions. Allen Ruch exercise https://www.khanacademy.org/science/grade-7-science-tx/xe25057200abc6bd6:changes-in-matter-and-solutions/xe25057200abc6bd6:physical-changes/e/apply-physical-properties-and-changes-tx7 2026-06-30T14:20:41.927190319Z Apply: Physical properties and changes Apply your understanding of physical properties and physical changes in this set of free, standards-aligned practice questions. Donna fig exercise