Nuclear Chemistry: The Formation of New Elements
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Matter, Atomic Structure, and Bonding
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Formation of Elements
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1. What patterns do you notice in the fusion
reactions?
2. Do you think gold can be created on Earth by
a fusion reaction? Explain your thinking.
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How are new elements formed?
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explain how different elements are formed
through nuclear reactions
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write a balanced nuclear equation
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describe the mechanism behind a nuclear chain
reaction
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Work individually.
You will need a copy of the periodic table and the
isotope chart from Lesson 14.
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Nuclear processes can be written as nuclear
equations.
During alpha decay, the nucleus of an atom emits a
helium nucleus, transforming the element into an
element with a smaller nucleus.
During beta decay, a neutron inside the nucleus of
an atom emits an electron.
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Nuclear fusion involves the joining together of
nuclei.
Fission involves a nucleus breaking up into smaller
nuclei.
Nuclear reactions change the identity of an
element.
Nuclear fusion produces bigger (heavier) elements
from smaller (lighter) ones.
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Nuclear Chain Reactions
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Nuclear fission is a process that releases
enormous amounts of energy.
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Nuclear fission can result in a nuclear chain
reaction that produces a great deal of energy.
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How are new elements formed?
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Radioactive decay, nuclear fusion, and nuclear
fission are all nuclear processes that result in the
creation of new elements.
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The mass of a nucleus changes when neutrons or
protons are added or lost.
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The identity of an element changes when its
nucleus gains or loses protons.
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Radioactive decay happens in the natural world
around us. Fission can be spontaneous for
unstable nuclei, or it can be provoked using
nuclear bombardment and other methods.
Fusion of nuclei to form different isotopes
happens in the stars.
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In a paragraph, defend this statement:
If you want to find gold, your best bet is to dig
“
old
”
gold out of the ground. Your chances of
making
“
new
”
gold are slim.
Delve into the fascinating world of nuclear chemistry with a focus on the formation of new elements through processes like radioactive decay, nuclear fusion, and nuclear fission. Understand how nuclear reactions change the identity of elements and explore the dynamics of nuclear chain reactions. Gain insights into the mechanisms behind the creation of new elements through balanced nuclear equations and the interplay of protons and neutrons within atomic nuclei.
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Presentation Transcript
Living By Chemistry SECOND EDITION Unit 1: ALCHEMY Matter, Atomic Structure, and Bonding
Lesson 16: Old Gold Formation of Elements
ChemCatalyst 1. What patterns do you notice in the fusion reactions? 2. Do you think gold can be created on Earth by a fusion reaction? Explain your thinking.
Key Question How are new elements formed?
You will be able to: explain how different elements are formed through nuclear reactions write a balanced nuclear equation describe the mechanism behind a nuclear chain reaction
Prepare for the Activity Work individually. You will need a copy of the periodic table and the isotope chart from Lesson 14.
Discussion Notes Nuclear processes can be written as nuclear equations. During alpha decay, the nucleus of an atom emits a helium nucleus, transforming the element into an element with a smaller nucleus. During beta decay, a neutron inside the nucleus of an atom emits an electron.
Discussion Notes (cont.) Nuclear fusion involves the joining together of nuclei. Fission involves a nucleus breaking up into smaller nuclei. Nuclear reactions change the identity of an element. Nuclear fusion produces bigger (heavier) elements from smaller (lighter) ones.
Discussion Notes (cont.) Nuclear Chain Reactions
Discussion Notes (cont.) Nuclear fission is a process that releases enormous amounts of energy. Nuclear fission can result in a nuclear chain reaction that produces a great deal of energy.
Wrap Up How are new elements formed? Radioactive decay, nuclear fusion, and nuclear fission are all nuclear processes that result in the creation of new elements. The mass of a nucleus changes when neutrons or protons are added or lost. The identity of an element changes when its nucleus gains or loses protons.
Wrap Up (cont.) Radioactive decay happens in the natural world around us. Fission can be spontaneous for unstable nuclei, or it can be provoked using nuclear bombardment and other methods. Fusion of nuclei to form different isotopes happens in the stars.
Check-In In a paragraph, defend this statement: If you want to find gold, your best bet is to dig old gold out of the ground. Your chances of making new gold are slim.
