Practice ATOMIC MASS - 3.2.2 | 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 unit used to express atomic mass?

πŸ’‘ Hint: Think about the unit that defines mass in the atomic world.

Question 2

Easy

Define relative atomic mass in your own words.

πŸ’‘ Hint: Consider what standard we use for comparison.

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 definition of atomic mass?

πŸ’‘ Hint: Think about what measurement reflects the size of an atom.

Question 2

The relative atomic mass of an atom is compared to which element?

  • Hydrogen
  • Oxygen
  • Carbon-12

πŸ’‘ Hint: Recall which atom serves as the baseline for atomic mass.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

If the average atomic mass of chlorine is 35.5 u, how do we account for its isotopes in this calculation?

πŸ’‘ Hint: Think about how averages are formed from different samples.

Question 2

Consider a situation where you need to balance a chemical equation. If you start with 46 g of aluminum reacting with oxygen, how do you find the relative quantities of products formed?

πŸ’‘ Hint: Refer back to how atomic masses align with mole calculations.

Challenge and get performance evaluation