What type of change results in the formation of a new substance?

chemical change

Explanation:

the the answer is chemical change because in chemical change new substances are always formed. Example rusting of iron it's a chemical change and it cannot be reversed example 2 burning of paper forms ashes so therefore the new substance formed is ashes

where is the following

explanation:

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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