Is Fusion Considered a Chemical Reaction in Stars?

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SUMMARY

Fusion is definitively classified as a nuclear reaction, not a chemical reaction. In nuclear fusion, hydrogen nuclei combine at extremely high temperatures (billions of K) to form helium, resulting in a transformation of atomic nuclei. This contrasts with chemical reactions, which involve the rearrangement of electrons and do not change the atomic nuclei. Key distinctions include that chemical reactions occur at lower temperatures and do not alter the elemental identity of the substances involved.

PREREQUISITES
  • Understanding of nuclear reactions and their mechanisms
  • Knowledge of atomic structure, including protons and neutrons
  • Familiarity with chemical reactions and their characteristics
  • Basic principles of thermodynamics related to temperature and energy
NEXT STEPS
  • Study the principles of nuclear fusion in stars, focusing on hydrogen fusion processes
  • Explore the differences between nuclear fusion and fission, including their applications
  • Research the conditions required for nuclear reactions, particularly temperature and pressure
  • Learn about Dalton's Law and its implications for chemical reactions and atomic theory
USEFUL FOR

Students of chemistry and physics, astrophysicists, and anyone interested in understanding the fundamental differences between chemical and nuclear reactions.

pinochet
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im reading a chemistry text and its says in daltons law chemicals can not change into atoms during a chemical reaction.but if fusion is a chemical reaction then this is wrong beacuse in stars for example hydrogen combine with hydrogen to form helium .i guest i need a little clarification of what a chemical reaction is.
 
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Fusion is not a chemical reaction. It is a nuclear reaction. In chemical reactions nuclei don't change. Chemical reactions take place in low temperatures (up to several thousands K), while fusion requires temperatures many orders of magnitude higher (billions of K).
 
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i guest i need a little clarification of what a chemical reaction is

chemical reactions involve electrons
whilst
nuclear reactions involve particles inside the atomic nucleus - protons and neutrons
 
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pinochet said:
im reading a chemistry text and its says in daltons law chemicals can not change into atoms during a chemical reaction.but if fusion is a chemical reaction then this is wrong beacuse in stars for example hydrogen combine with hydrogen to form helium .i guest i need a little clarification of what a chemical reaction is.
I think not. Chemical reaction involves two substances that are chemically combined to form a brand new substance which is different from its original properties while nuclear reaction involves two nuclei colliding with each other at high speed to form a new type of atomic nucleus. (Am I correct?) Just like the Sun, hydrogen fuses with hydrogen to form helium via nuclear fusion.
 
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Nuclear reactions involve changes to atomic nucleii, transforming the atom into that of a different element.
Nucleii combining to form heavier elements is fusion.
Then there also is fission where a heavier element's nucleus breaks up.
Commonly a helium nucleus splits off from the heavy nucleus and the remainder becomes a lighter element, which may then undergo still further decay.

Chemical reactions do not involve nucleii, the elements remain the same but they are recombined in different ways.
 
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thank you guys i get it now .
 

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