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(PDF Version - 122 K) Dangerously Reactive Materials are unstable or highly reactive materials that can undergo extremely hazardous uncontrolled reactions.They can cause explosions, fires or extreme heating, with potential for significant personal injury and property damage.
semiconductor. [-kÉndukâ²tÉr]. a solid crystalline substance whose electric conductivity is intermediate between that of a conductor and that of an insulator. An n-type semiconductor has loosely bound electrons that are relatively free to move about inside the material.A p-type semiconductor is one with holes, or positive traps, in which electrons may be bound.The holes may appear to migrate through the material.-kÉndukâ²tÉr]. a solid crystalline substance whose electric conductivity is intermediate between that of a conductor and that of an insulator. An n-type semiconductor has loosely bound electrons that are relatively free to move about inside the material.