D) reacts with oxygen
All other are physical properties.
<span> Atoms combine as the electrons from each atom are attracted to the nuclei of the atoms. This results in bonds ranging from 100% covalent to bonds with high ionic character. The combination of atoms to form compounds occurs when the compounds being formed are at lower energy than the original atoms.</span>
Whenever energy is converted from one form to another, some of that energy is lost by being changed into heat.
