1 There are two ways to get involved in the GNEM-DMP: the patient-reported part, or online registry; and the physician-reported part, or natural history study.  Even if you are participating in another registry, natural history study or clinical trial, you can still participate in the GNEM-DMP.
New bonds will form between the two hydrogen atoms and the single oxygen atom in the water molecule that is formed as the product. For bonds to break, energy must be absorbed. When new bonds form, energy is released. The energy that is needed to break a bond is called the bond energy or bond dissociation energy.
A huge amount of mass is above you, squeezing down on you from all sides. This is what happens to the hydrogen gas in the core of the Sun. It gets squeeze together so tightly that four hydrogen nuclei combine to form one helium atom. This is called nuclear fusion. In the process some of the mass of the hydrogen atoms is converted into energy in the form of light. The same process occurs in thermonuclear (fusion) bombs. In the Sun the process occurs in a controled manner. In a bomb it happens all at once in a big chain-reaction explosion.