Practice MOLECULAR MASS - 3.5.1 | 3. Atoms and Molecules | CBSE 9 Science
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the molecular mass of water?

πŸ’‘ Hint: Consider the atomic masses of hydrogen and oxygen.

Question 2

Easy

What is the formula unit mass of sodium chloride?

πŸ’‘ Hint: Add the atomic masses of sodium and chlorine.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the molecular mass of a molecule of water (Hβ‚‚O)?

  • 16 u
  • 18 u
  • 20 u

πŸ’‘ Hint: Add up the weights of hydrogen and oxygen.

Question 2

True or False: Molecular mass is applicable only to ionic compounds.

  • True
  • False

πŸ’‘ Hint: Think about the type of bond in the compound.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A laboratory synthesized a compound Cβ‚„Hβ‚…O. Calculate its molecular mass and compare it with that of glucose (C₆H₁₂O₆).

πŸ’‘ Hint: Use atomic masses for carbon (12), hydrogen (1), and oxygen (16).

Question 2

What is the molecular mass of a compound made of 3 parts sodium, 1 part sulfur, and 4 parts oxygen?

πŸ’‘ Hint: Calculate using the atomic mass of each component.

Challenge and get performance evaluation