MEDIUM
9th CBSE
IMPORTANT
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Write the formula of barium carbonate.

Important Questions on Atoms and Molecules

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 4
Write the formulae of copper (II) phosphate.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 5

Give one example each of 
a. cation 
b. anion 
c. polyatomic ion.
 

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 6
What is meant by the term chemical formula? 
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 7
A compound's chemical formula is Fe2O3. Name the elements present in this compound. Name the compound represented by this formula.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 8
Write the atomicity of the following molecules: 
a. NH3
b. SiH4
c. NO2
 
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 9
How does molecular formula differ from empirical formula?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 10
How are empirical formula and molecular formula related?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 11
Write down the names of compounds represented by the formulae:
a. Al2SO43
b. CaCI2
c. K2SO4
d. KNO3
e. CaCO3