Construct as a star dies, it becomes denser
s temperature rises to a point where
helium (he) nuclei fuse with other nuclei
when this happens, the atomic numbers of
the other nuclei are increased by 2 because
each gains the two protons contained in
che he nucleus. for example, chromium
(c) fuses with he to become iron (fe)
copy and complete the concept map
showing the first four steps in he fusion
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