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Chemical elements are formed in the Universe by stellar nucleosynthesis.

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Q: What is a hypothesis to explain the presence of iron and other heavier elements than iron?
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Explain how heavier elements are formed from hydrogen within the core of a star?

Nuclear fusion


What it a process in which lighter elements stick together to create heavier elements?

The process in which lighter elements stick together to create heavier elements is known as fusion. This is the process that will be used in the synthesis of a heavier atomic nuclei.


What does it mean when a star has a high percentage of heavier elements?

when the percentage of heaver elements is high density will be very high! for example you consider the planet mars it is heavier than earth why because the main element present in mars is helium this leads to greater mass ! we know the stars too have life i,e it undergoes many changes before becoming black hole! In the presence of heavier elements leads to heavier reactions inside the star and may leads to sudden explosions causing nova and super nova and due to these explosions outer parts of the star will explode and these objects will rotate around the universe as a dust ! and these will fall on earth as a meteors,aestroids and comets and finally i can say due to the presence of heavier elements it leads to causing distruction or minimisation of star


How are elements heavier than iron are formed?

Elements heavier than iron are formed in super-nova explosions.


Explain how the heavier elements such as iron are produced in astrophysical processes?

Heavier atoms which could not be formed as a result of fusion are produced as the result of a star that has run out of fuel exploding. It essentially forces atoms which do not release energy to fuse together.


What elements are formed in cool stars?

Elements that are formed in cool stars are heavy but not heavier than iron. (Elements that are heavier than iron are formed in a supernova.)


Why are stars referred to as atomic furnaces?

It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.It is in the stars that the heavier elements (basically, anything after element #2, helium) are made.


How are the elements carbon nitrogen and oxygen produced in stars like the sun?

These fusion (carbon , nitrogen , and oxygen) reactions form nuclei of sightly heavier elements.


What is the term describing the fusing of lighter elements into heavier elements?

nucleosynthesis


What are some characteristics of stars that might account for the fact that some have more complex elements in their spectra?

Older age might account for it. As a star ages, it uses up the simplest elements (hydrogen . . . helium . . .) then starts fusing heavier and heavier elements. Our Sun will get to the point of fusing iron, which is pretty heavy, but the truly large stars out there will fuse elements much heavier than Iron. These heavier and heavier elements may account for some stars having more complex elements in their spectra.


Did gravity pulled the atoms together to form heavier elements?

No. Heavier elements were created by nuclear reactions in previous generations of stars.


What is heavier than air?

Almost all solid elements are heavier than air. This is why these elements do not float under normal atmospheric situations.