CBSE Class 9 Science Atoms and Molecules Worksheet Set 03

Here is CBSE Class 9 Science Atoms and Molecules Worksheet Set 03 for your daily studies. Download free printable Class 9 Science worksheets as a PDF file, made for Chapter 3 Atoms and Molecules. Expert teachers designed these tasks around the 2026-27 syllabus rules from CBSE, NCERT, and KVS.

Worksheets for Class 9 Science - Chapter 3 Atoms and Molecules

Are you in Class 9 Science? Try these chapter-wise worksheets every day to make your concepts of Chapter 3 Atoms and Molecules very clear. The practice papers contain useful questions and answers for school tests. Solving these Class 9 Science problems regularly will build your speed and help you score high marks in the 2026-27 exams.

Practice Sheet PDF: Chapter 3 Atoms and Molecules (Class 9 Science)

Practice Worksheet
CBSE Class 9 Science
Topic: Atoms and Molecules

Very Short Answer
 
Q1) What is the significance of valency? 
Ans: Valency is used to find out how atom of an element will combine with the atom of another element to form a chemical compound.
 
Q2) Define Avogadro’s constant. 
Ans: Avogadro’s Constant (6.022 x 1023) is the number of atoms of an element present in one mole of that element.
 
Q3) What is the
a. the mass of a mole of oxygen gas
b. the mass of an oxygen ion
Ans:  a. Mass of a mole of oxygen gas
1 mole of oxygen = O2 = 2 x 16 =32u
b. Mass of an oxygen ion = mass of an oxygen atom (since electrons have negligible mass)
= =6.022 x 1023 atoms
 
Q4) What is the atomicity of oxygen and phosphorous? 
Ans: Atomicity of oxygen, O2= 2 and atomicity of phosphorous, P4= 4.

Q5) Write the symbols of tungsten and iron.
Ans: Tungsten is W
Iron is Fe
 
 

Click below to download practice worksheet for CBSE Class 9 Science Atoms and Molecules Worksheet Set C


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Revision Worksheet: Chapter 3 Atoms and Molecules (CBSE)

Utilize the Chapter 3 Atoms and Molecules practice worksheet shared above to strengthen your school test preparation. These solved Q&As align with the official CBSE framework for Class 9 Science. Download the PDF format instantly to practice daily, featuring core exam topics curated by experienced teachers for better results.

Expert NCERT Practice Material for Class 9 Science

Built strictly from the official NCERT book for Class 9 Science, this practice content offers reliable academic support. Following your self-practice, our educators recommend reviewing our detailed NCERT solutions to learn optimal problem-solving approaches for Science. All study aids are completely free to access.

Additional Study Resources for Class 9 Science

Maximize your performance in Class 9 by taking the interactive Science MCQ test for this topic. Explore our website for additional printable assignments tailored for Class 9 Science. Routine practice drives test confidence and maximizes success in CBSE board exams.

FAQs

Where can I download the latest PDF for CBSE Class 9 Science Atoms and Molecules Worksheet Set 03?

You can download the teacher-verified PDF for CBSE Class 9 Science Atoms and Molecules Worksheet Set 03 from StudiesToday.com. These practice sheets for Class 9 Science are designed as per the latest CBSE academic session.

Are these Science Class 9 worksheets based on the 2026-27 competency-based pattern?

Yes, our CBSE Class 9 Science Atoms and Molecules Worksheet Set 03 includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 9.

Do you provide solved answers for CBSE Class 9 Science Atoms and Molecules Worksheet Set 03?

Yes, we have provided detailed solutions for CBSE Class 9 Science Atoms and Molecules Worksheet Set 03 to help Class 9 and follow the official CBSE marking scheme.

How does solving CBSE Class 9 Science Atoms and Molecules Worksheet Set 03 help in exam preparation?

Daily practice with these Science worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 9 students get more marks in CBSE exams.

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