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| Question | Answer |
|---|---|
| What is radioactive decay or radioactivity | Radioactive decay is the term used to described the spontaneous emission of particles or electro magnetic radiation from an unstable nucleus |
| what is the reaction called from one a nucleus of one element changes in to a different element | transmutation |
| what is another word for radioactive decay or radioactivity and why is it Called this | natural transmutation because the process occurs spontaneously in nature |
| what determines the stability of a nucleus | the ratio of proteins to neutrons |
| The ratio of all nuclei with an atomic number greater than ___ makes them unstable and as a result they do what | 83, as a result they undergo radioactive decay |
| what is artificial transmutation | its when you bombard the nucleus with high energy particles |
| how can u tell artificial transmutation an natural transmutation | natural has only one reactant while artificial has 2 |
| What is nuclear Fusion | Nuclear fusion occurs when 2 or more smaller nuclei combine to form larger nuclei . |
| what does nuclear fusion require | large amounts of energy |
| where does the energy from the sun come from | nuclear fusion |
| Whats nuclear fission | when large molecules usually uranium breaks down in to smaller daughter nuclei |
| what is used for dating once living materials | Carbon-14 |
| what is used for dating rocks and other geological formations | Uranium 238 |
| what does uranium 238 decay to until its stable | it decays until it reaches Pb 206 that's when it turns stable |
| Certain radio isotopes that have short half lives and are quickly eliminated from the body are important because they ___ | can be used as tracers medical diagnosis |
| What is I-131 used for | detection and treatment of thyroid disorders |
| Co-60 is used for | cancerous tumors to kill the rapidly growing cancer cells |
| what is Tc-99 used for | used to detect cancer and a wide range of other injuries ,infections, and diseases |
| what are some health risks of exposure to radiation | genetic mutations, damage to healthy tissues , illness and death |
| why Is it hard to get rid of nuclear waste | some nuclear waste have long half lives and stay radioavtive for a long period of time |
Created by:
Fernando.Quezada