What Is the Origin of the Elements?
There are a little over one hundred elements in the universe. How were they created?
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What is nuclear fusion? Choose all correct answers
A process in which hydrogen atoms fuse, forming elements with larger atomic numbers.
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A process requiring energy.
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A process in which hydrogen atoms split, and elements with smaller atomic numbers are formed
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An energy releasing process.
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During a supernova, neutrons are formed, which are then captured by the nuclei of iron atoms. Choose the correct description of the process
Only the capture of a neutron in a nucleus of an atom, after which there is no further process, forms a nucleus of an element with a larger atomic number.
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Only the capture of a neutron in a nucleus of an atom, after which there is an emission of an \alpha particle, forms a nucleus of an element with a larger atomic number.
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Only the capture of a neutron in a nucleus of an atom, after which there is an emission of gamma radiation, forms a nucleus of an element with a larger atomic number.
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Only the capture of a neutron in a nucleus of an atom, after which there is an emission of a beta particle, forms a nucleus of an element with a larger atomic number.
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Choose the correct answers
The formation of elements heavier than atomic number 26 occurs when stars end their lives in a supernova explosion.
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The formation of helium from hydrogen occurs over the course of a few seconds
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The formation of elements up to atomic number 26 occurs during the lifetime of stars.
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The formation of elements heavier than iron occurs over the course of a few seconds.
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Can gold be manufactured in particle accelerators? Choose the correct answers.
Yes, but it will be different gold than that formed in a supernova explosion.
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Yes, but it is a very expensive process and is not economically viable.
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No, gold can only be formed in a supernova explosion.
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Yes, but the process will take a very long time.
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What is the source of gold on Earth? Choose the correct answer.
Gold comes from geothermal activity on Earth.
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Gold comes from the remains of stars that exploded, were dispersed all over space, and eventually formed Earth.
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Gold comes from other planets.
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Gold comes from the depths of Earth’s oceans, and therefore the oceans contain large amounts of gold.
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How were the elements formed in the universe? - An interactive video
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By watching this video, students will learn how the elements were formed in the universe, after completing the study of “isotopes” and “radioactivity”, crucial for understanding the subject
atomic structure, atomic number, isotopes, alpha radiation, beta radiation, gamma radiation
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