Chemical substance can be transmuted into another element through a nuclear reaction. This is so, because all of the atoms in a sample of an element have the same number of protons, though they may be different isotopes, with differing numbers of neutrons. As of 2012, there are 118 known elements, about 80 of which are stable – that is, they do not change by radioactive decay into other elements. Some elements can occur as more than a single chemical substance (allotropes). For instance, oxygen exists as both diatomic oxygen (O) and ozone (O). The majority of elements are classified as metals.
More Than This (novel) the Driver himself heals Seth. Tomasz, not realizing this, uses the Driver's baton to kill him. The three return to their plan to put Seth back. Seth takes his coffin, and finally says, "I'm ready." "More Than This" was reviewed favorably by critics and readers. Martin Chilton of "The Daily Telegraph" describes the novel as "an impressively challenging and philosophical book for young adults," capturing "ambiguity and bewilderment of being young and the uncertainty of what will happen to any of us next in life." Tony Bradman of "The Guardian" concurred, writing: "Seth is a terrific exemplar of the eternal