Download printable Science Class 9 Worksheets in pdf format, CBSE Class 9 Science Atoms and Molecules Worksheet Set D 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) What is the law of conservation of mass? Write the formula of a polyatomic cation.
Ans: When a physical or chemical change occurs the total mass of the reactants is equal to the total mass of the products formed in the reaction.
NH4+
Q2) Suraj was given a fine white-colored powder which is either sugar or salt. How would he identify it without tasting?
Ans: On heating, white coloured powder, it will char if it is sugar. On the other hand, the powder may be dissolved in water and pass an electric current through it. If it conducts,
it is salt.
Q3) What is unified atomic mass unit (u)?
Ans: Unified atomic mass unit is equal to 1/12th the mass of a carbon-12 atom.
Q4) How many mole atoms of oxygen (O) are present in 96g of ozone?
Ans:
Q5) Name the ions present in NH4NO3
Ans: NH4+ and NO3-
Click below to download practice worksheet for CBSE Class 9 Science Atoms and Molecules Worksheet Set D
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