2.3 - Defining Elements: Atomic Number, Mass Number, and Isotopes
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Practice Questions
Test your understanding with targeted questions
What does the atomic number represent?
💡 Hint: Remember 'Z for Protons.'
How do you calculate mass number?
💡 Hint: Think of A = Z + N.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the atomic number represent?
💡 Hint: Remember 'Z for protons'!
True or False: Isotopes have different atomic numbers.
💡 Hint: They're the same element, just different in neutrons!
2 more questions available
Challenge Problems
Push your limits with advanced challenges
An element with atomic number 20 has a mass number of 40. How many neutrons does it have, and what element is it?
💡 Hint: Use the formula A = Z + N to find N.
You have samples of Carbon-12 and Carbon-14. If both have 6 protons, how can you differentiate them in a lab setting?
💡 Hint: Think about physical properties and measurements.
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