CBSE Class 9 Science Atoms and Molecules Worksheet Set C

Read and download free pdf of CBSE Class 9 Science Atoms and Molecules Worksheet Set C. Download printable Science Class 9 Worksheets in pdf format, CBSE Class 9 Science Chapter 3 Atoms and Molecules Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Science Class 9 Assignments and practice them daily to get better marks in tests and exams for Class 9. Free chapter wise worksheets with answers have been designed by Class 9 teachers as per latest examination pattern

Chapter 3 Atoms and Molecules Science Worksheet for Class 9

Class 9 Science students should refer to the following printable worksheet in Pdf in Class 9. This test paper with questions and solutions for Class 9 Science will be very useful for tests and exams and help you to score better marks

Class 9 Science Chapter 3 Atoms and Molecules Worksheet Pdf

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
 
 

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Chapter 3 Atoms and Molecules CBSE Class 9 Science Worksheet

The above practice worksheet for Chapter 3 Atoms and Molecules has been designed as per the current syllabus for Class 9 Science released by CBSE. Students studying in Class 9 can easily download in Pdf format and practice the questions and answers given in the above practice worksheet for Class 9 Science on a daily basis. All the latest practice worksheets with solutions have been developed for Science by referring to the most important and regularly asked topics that the students should learn and practice to get better scores in their examinations. Studiestoday is the best portal for Printable Worksheets for Class 9 Science students to get all the latest study material free of cost. Teachers of studiestoday have referred to the NCERT book for Class 9 Science to develop the Science Class 9 worksheet. After solving the questions given in the practice sheet which have been developed as per the latest course books also refer to the NCERT solutions for Class 9 Science designed by our teachers. After solving these you should also refer to Class 9 Science MCQ Test for the same chapter. We have also provided a lot of other Worksheets for Class 9 Science which you can use to further make yourself better in Science.

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