https://www.khanacademy.org/science/mh-class-7-science-revision-course/x16e69e7a3344a1ee:week-3/x16e69e7a3344a1ee:untitled-322/v/soaps-and-detergents 2023-07-28T12:36:06.632326991Z Soaps and detergents Let's explore how soaps and detergents are useful in cleaning dirt. We will also explore why soap does not lather in hard water and how we solve for this in detergents and shampoos. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Soaps and detergents Let's explore how soaps and detergents are useful in cleaning dirt. We will also explore why soap does not lather in hard water and how we solve for this in detergents and shampoos. https://cdn.kastatic.org/ka-youtube-converted/2PHrJKbykVI.mp4/2PHrJKbykVI.mp4 204 Materials We Use https://www.khanacademy.org/science/mh-class-7-science-revision-course/x16e69e7a3344a1ee:week-3/x16e69e7a3344a1ee:untitled-322/e/soaps-and-detergents 2026-03-31T01:02:11.609621879Z Soaps and Detergents Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/mh-class-7-science-revision-course/x16e69e7a3344a1ee:week-3/x16e69e7a3344a1ee:untitled-322/e/cement-and-concrete 2026-04-08T00:54:09.631945657Z Cement and Concrete Let's practice! vibhor exercise