Introductionl

We will deal and explain more about Radioactive elements In chemical reactions' the atoms that make up th elements do not change. However, in some circumstances th atoms can be made to change (such as when two hydrogen atoms are made to fuse togerther to produce a helium atom) and some elements , such as uranium, continually change. Elements that continually change are called radioactive elements. All atomic change is characterised by a release of energy, which may be in the form of heat alone, heat and light togerther, or, as in the form af the radioactive elements,heat,light and the release of "radiation" (rays or particles of matter). All the alements with an atomic number off 88 and above in the Periodic Table are radioactive. In addition some common elements (such as hydrogen oxygen and carbon) have radioactive forms called isotopes.

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