In materials, oxidation occurs when atoms lose electrons. This process can be observed when certain materials undergo chemical reactions where they lose electrons. When atoms lose electrons, they are oxidized. Therefore, in the context of the question, if atoms in materials are giving away electrons, then the statement "La oxidación se presenta en los materiales cuando sus átomos ceden electrones" is TRUE.
To simplify:
1. Oxidation in materials happens when their atoms lose electrons.
2. If atoms are giving away electrons in materials, it means oxidation is occurring.
3. Therefore, the statement "La oxidación se presenta en los materiales cuando sus átomos ceden electrones" is TRUE.
