Atoms and Molecules CBSE Class 9 Science

With our study module for CBSE Class 9 Science, students can learn a chapter like Atoms and Molecules in depth. Class 9 Chemistry is a complex subject and only a comprehensive amount of information and guidance can help students understand the same. Along with excellent study material for class 9 Science chapters like Atoms and Molecules, students can avail Free NCERT solutions, revision notes and test papers. The study material, students of CBSE Class 9 Science get has been designed by experts to be clear and easy to understand too! In order to gain the benefits of tools like animated graphics and AV aid for studying Atoms and Molecules, log in today!

Atoms and Molecules Class 10 Science Study Material

Here, we will be studying about Dalton's Theory and the Laws of Chemical Combination, Atoms, Molecules and Ions. We will also be learning how to write the chemical formulas of compounds, determining molecular mass and formula unit mass and will also understand the Mole Concept. Click This Link to Study Atoms and Molecules Chapter in detail.

Some Important NCERT Questions from Atoms and Molecules Chapter

Question 1: 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 + ethanoic acid → sodium ethanoate + carbon dioxide + water Question 2: Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas? Question 3: Which postulate of Dalton's atomic theory is the result of the law of conservation of mass? Question 4: Which postulate of Dalton's atomic theory can explain the law of definite proportions? Question 5: Define atomic mass unit. Sign Up to get answers to all of your ncert questions for Atoms and Molecules