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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define the term isotope.
💡 Hint: Think about what makes elements behave differently.
Question 2
Easy
What is average atomic mass?
💡 Hint: Consider how weights might be applied to different quantities.
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 average atomic mass?
- A fixed number for all elements
- Weighted average of isotopes
- An arbitrary value
💡 Hint: Think about how averages work!
Question 2
Is the average atomic mass the same as the mass number?
- True
- False
💡 Hint: Reflect on definitions of both terms.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the average atomic mass of silicon, which has four isotopes: 28Si (97.3%), 29Si (1.1%), 30Si (0.7%). Give answers in atomic mass units.
💡 Hint: Use the same process as with carbon's isotopes!
Question 2
Explain why knowing the average atomic mass is crucial for finding molecular weights in chemical reactions?
💡 Hint: Remember how precise amounts affect reactions.
Challenge and get performance evaluation