Class 9 Science Chapter 3 Atoms and Molecules NCERT Solutions Page 32, 33 1. In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium acetate. Show that these observations are in agreement with the law of conservation of mass. sodium carbonate + acetic acid → sodium acetate + carbon … [Read more...] about Chapter 3 Atoms and Molcules
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Chapter 2 Is Matter Around Us Pure
Class 9 Science Chapter 2 | Is Matter Around Us Pure NCERT Solutions Page 15 1.What is meant by a substance? Answer: A pure substance is the one that consist of a single type of particle i.e. all constituent particles of the substance have the same chemical nature. 2. List the points of differences between homogeneous and heterogeneous … [Read more...] about Chapter 2 Is Matter Around Us Pure
Chapter 1 Matter in Our Surroundings
Class 9 Science Chapter 1 Matter in Our Surroundings NCERT Solutions Question Answers, Page 3 1. Which of the following are matter? Chair, air, love, smell, hate, almonds, thought, cold drinks , lemon, water, smell of perfume. Answer: Anything which occupies space and has mass is called matter. There are three states of matter: solid, liquid and gas. Chair, … [Read more...] about Chapter 1 Matter in Our Surroundings