Download printable Science Class 9 Worksheets in pdf format, CBSE Class 9 Science Atoms and Molecules Worksheet Set F 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 Grade 9. Free chapter wise worksheets with answers have been designed by Standard 9 teachers as per latest examination pattern
Worksheet for Class 9 Science Chapter 3 Atoms and Molecules
Class 9 Science students should refer to the following printable worksheet in Pdf for Chapter 3 Atoms and Molecules in Grade 9. This test paper with questions and solutions for Standard 9 Science will be very useful for tests and exams and help you to score better marks
Chapter 3 Atoms and Molecules Class 9 Science Worksheet Pdf
Practice Worksheet
CBSE Class 9 Science
Topic: Atoms and Molecules
Very Short Answer
Q1) Sample A contains one-gram molecules of oxygen molecules and sample B contains one mole of oxygen molecules. What is the ratio of the number of molecules in both the sample?
Ans: One gram molecules and one gram mole contain the same number of molecules ( 6.022 x 1023).Therefore, the ratio is 1:1
Q2) An element X has valency 3 while the element Y has valency 2. Write the formula of the compound between X and Y.
Ans: X2Y3
Q3) Identify the cations and anions in the following compound.
NH4Cl
Ans: NH4+, Cl-
Q4) An element X exhibits variable valencies 3 and 5. Write the formulae of the chlorides of the element.
Ans: XCl5 and XCl3
Q5) Give an example of trivalent cation and monovalent anion.
Ans: Trivalent cation Al3+, monovalent anion Cl-
Click below to download practice worksheet for CBSE Class 9 Science Atoms and Molecules Worksheet Set F
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