What is the result of fusion reactions?
a new element or different atom formed from the original two
two atoms chemically bonded
two new or different atoms formed from the original
pure energy only

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume

What mass of glucose is produced when 54g of water react with carbon dioxide