c7SciCh2no NCERT GUIDE CLASS 7 Chapter 2. Exploring Substances: Acidic, Basic, and Neutral NCERT CLASS-7 GUIDE Notes in a Nutshell Substances around us may be classified as acidic, basic, and neutral in nature. Litmus Paper and its Use. - Litmus is a natural substance obtained from lichens. It is available both as a solution and in the form of paper strips, known as litmus paper. - The litmus paper is available in two colours—blue and red. - Substances that turn blue litmus paper to red are acidic in nature, while those that turn red litmus paper to blue are basic in nature. Acidic substances: turn blue litmus red. Basic substances: turn red litmus blue. - Since litmus shows different colours in acidic and basic solutions, it is called an acid-base indicator. Some substances other than litmus, both natural and synthetic, can also be used as indicators. Synthetic indicators are mad...
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c1SciMenu Class-7 NCERT GUIDE Welcome on GEO-QUE`s Class-7 NCERT GUIDE Science Chapter-1 HOME Notes in a Nutshell Video Lectures ( Paid Content ) In Chapter Exercises Question-Answers Word-Meanings Extra Bytes for Smart Brains Free Email Subscription Change Chapter Change Subject Change CLASS SCC1970 HOME GEO-QUE HOME Contact Us Facebook YouTube Telegram © Geo-Que.blogspot.com
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c7SciIn CLASS 7 NCERT GUIDE GEO-QUE`s CLASS-7 NCERT GUIDE SCIENCE INDEX Choose Your CHAPTER... Chapter 1. The Ever-Evolving World of Science Chapter 2. Exploring Substances:Acidic, Basic, and Neutral Chapter 3. Electricity: Circuits and their Components Chapter 4. The World of Metals and Non-metals Chapter 5. Changes Around Us: Physical and Chemical Chapter 6. Adolescence:A Stage of Growth and Change Chapter 7. Heat Transfer in Nature Chapter 8. Measurement of Time and Motion Chapter 9. Life Processes in Animals Chapter 10. Life Processes in Plants Chapter 11. Light: Shadows and Reflections Chapter 12. Earth, Moon, and the Sun Free Email Subscription Change Subject Change CLASS SCC1970 HOME GEO-QUE HOME Contact Us...
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c7Scich1no NCERT GUIDE CLASS 7 Chapter 1. The Ever-Evolving World of Science NCERT CLASS-7 GUIDE Notes in a Nutshell Science as a Journey of Exploration. - Science studies both the tiny or microscopic world (like cells, atoms, microbes) and the vast cosmic world (stars, planets, galaxies, and universe). - It connects everyday experiences with cosmic phenomena, making us explorers of both the near and far. - Learning science is not just about facts — it is about adventure, curiosity, and discovery. Curiosity Sparks Discovery. - Even simple activities, like folding a paper plane, can lead to big ideas. - A simple paper plane is more than just play, it demonstrates the basic principles of flight such as lift, drag, and thrust. Early scientists and inventors observed how paper planes glide through air, which inspired them to study air resistance and wing design. These small experiments gradual...