Atoms and Molecules

Class 9 Atoms and Molecules MCQ Quiz Set 1

Atoms and Molecules Quiz – 1 Test yourself what you have studied in this chapter with the help of this quiz created by the BrainIgniter experts and improve your study accordingly. Get the result instantly by clicking on submit button. Best wishes! [WATU 18]

Class 9 Atoms and Molecules Notes

Atoms and Molecules Notes Laws of chemical combination:- Law of conservation of mass:- It states that mass can neither be created nor be destroyed in a chemical reaction. Or,It states that the total mass of reactants is equal to total mass of products in a chemical reaction. Law of constant proportion:- It states that in […]

Class 9 Atoms and Molecules Important Questions

When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 6.00 g of carbon is burnt in 50.00 g of oxygen? Which law of chemical combination will govern your answer? What is the mass of: 0.2 mole of […]

NCERT Solutions Class 9 Science Chapter 3 Atoms and Molecules

In-Text Questions Solutions In-Text Questions Page 32 In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass. sodium carbonate […]