Isotopes: Exploring Atomic Variations
This worksheet explores the concept of isotopes, their properties, and their applications in various scientific fields for Grade 11 Chemistry students.
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Isotopes: Exploring Atomic Variations
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Read each question carefully and answer to the best of your ability. Show all work for calculations.
1. What distinguishes isotopes of the same element from each other?
Number of protons
Number of electrons
Number of neutrons
Atomic number
2. Which of the following pairs represents isotopes of the same element?
Carbon-12 and Nitrogen-14
Oxygen-16 and Oxygen-18
Uranium-235 and Plutonium-239
Hydrogen-1 and Helium-4
3. Isotopes of an element have the same number of but different numbers of .
4. The atomic mass of an element is the weighted average of the masses of its naturally occurring .
5. Radioactive isotopes are also known as and are used in various applications like medical imaging and carbon dating.
6. Explain why isotopes of an element exhibit similar chemical properties but different physical properties.
7. Describe at least two real-world applications of isotopes, providing specific examples.
8. All isotopes of an element are radioactive.
True
False
9. The mass number of an isotope is the sum of its protons and electrons.
True
False
10. Analyze the provided diagram of a simple atom. Identify which subatomic particles are responsible for the differences between isotopes.
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