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Questions and Answers
What is the atomic mass of Carbon?
What is the atomic mass of Carbon?
What is the number of neutrons in a Carbon atom?
What is the number of neutrons in a Carbon atom?
How many protons are in a Calcium atom?
How many protons are in a Calcium atom?
What is the definition of an ISOTOPE?
What is the definition of an ISOTOPE?
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What is the purpose of a particle accelerator?
What is the purpose of a particle accelerator?
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How many vacancies were there in the periodic table in 1925?
How many vacancies were there in the periodic table in 1925?
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What did Henry Gwyn-Jeffreys Moseley demonstrate about the atomic number?
What did Henry Gwyn-Jeffreys Moseley demonstrate about the atomic number?
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What was the highest atomic number of known elements in the 1930s?
What was the highest atomic number of known elements in the 1930s?
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What is the definition of a transuranic element?
What is the definition of a transuranic element?
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How important was the formation of elements in our solar system?
How important was the formation of elements in our solar system?
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Where do the atoms and molecules that make up your body come from?
Where do the atoms and molecules that make up your body come from?
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Study Notes
- Henry Gwyn-Jeffreys Moseley, an English physicist, established the relationship between the atomic number (number of protons) and the properties of an element.
- In 1919, Ernest Rutherford achieved a nuclear transmutation reaction, transforming one element into another, showcasing the process.
- The Periodic Table is arranged based on atomic number, electron configuration, and chemical properties of the elements.
- Synthetic elements are radioactive, with transuranic elements having atomic numbers greater than 92 and superheavy elements beyond 103.
- Supernovae play a crucial role in the formation of elements in our solar system, highlighting their significance.
- Elements in the human body, including protons, electrons, and neutrons, originated from the Big Bang, raising questions about their birthdates.
- Atoms are the smallest units of matter forming chemical elements, with electrons carrying a negative charge and protons a positive charge.
- The atomic number, representing the number of protons, serves as the identity of an atom, while the atomic mass is the sum of protons and neutrons.
- Isotopes are atoms with the same atomic number but different atomic masses, with some elements being synthesized using particle accelerators in 1925.
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Description
Test your knowledge on the definitions of terms related to atoms and subatomic particles, including electron, protons, neutrons, elements, and the periodic table of elements.
