Class9 Is Matter Around Us Pure | Important Questions Chemistry | CBSE guide brainticca Meritnation buyjus

NCERT CBSE Class9 Is Matter Around Us Pure | Full Lecture (Click here)

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Here are all the NCERT solutions for Class 9 Science Chapter 2. This solution contains questions, answers, images, step by step explanations of the complete Chapter 2 titled Is Matter Around Us Pure of Science taught in class 9. If you are a student of class 9 who is using NCERT Textbook to study Science, then you must come across Chapter 2 Is Matter Around Us Pure. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 9 Science Chapter 2 Is Matter Around Us Pure in one place. For a better understanding of this chapter, you should also see Chapter 2 Is Matter Around Us Pure Class 9 notes , Science.

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Important question | Class9 | Chemistry

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Question 1. What is meant by a substance?

Answer: A pure substance consists of a single type of particles.

Question 2. List the points of differences between homogeneous and heterogeneous mixtures.

Answer:

Question 3. To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.

Answer: Mass of solute (sodium chloride) = 36 g

Mass of solvent (water) = 100 g

Mass of solution = Mass of solute + Mass of solvent

= 36 g + 100 g = 136 g