nuclear chem webquest

Topics: Nuclear weapon, Neutron, Nuclear fission Pages: 2 (401 words) Published: August 2, 2014
Nuclear Chemistry webquest by Margaret Moore semester 1 Chemistry

Part One
1) The term Half-life for a radio-active substance means the time it takes for the substance to decay while decreasing by ½. 2) Spontaneous fission is a type of radioactive decay in heavy elements with unstable nuclei being split into more stable smaller fragments 3) Two important application of neutron radiation are neutron therapy for tumors/cancer and neutron bombs for defense. 4) Ionization radiation is radiation with rays with enough energy to allowing ionization in the medium it goes through. 5) Fission typically releases two hundred million eV from each reaction. Fission occurs with stable nuclei 6) Uranium enrichment (Uranium-235) is a type of uranium required to produce a controlled reaction. 7) The rods absorb nucleases to control the reaction rate.

8) Critical mass is the least amount of fissile material needed to sustain a nuclear chain reaction. 9) Hydrogen Bombs are created by fusion of two isotopes of hydrogen, deuterium and tritium 10) Styrofoam absorbs the gamma rays and is compressed.

11) The Fission bomb created needed heat and pressure for ignition. 12) A. An explosive fires and pushes a bullet down the barrel part of a gun. Then the bullet hits a sphere and generator, initiating fission allowing the bomb to explode. B. In order to create an implosion fissile material is arranged in a way cause it to reach its critical mass and create a nuclear explosion. Part Two

1) Cells can be undamaged by dosage, cells can die in result of damage, cells can damage, repair and then operate normally or cells could damage, repair and then operate abnormally. 2) Prenatal radiation exposure can lead to growth retardation, small head/brain size, mental retardation and/or childhood cancer. Part Three

1) Radiation can cause hair loss, seizures, loss of brain cells, a destroyed thyroid gland, lowered immune system, damage to blood vessels, heart failure, damage to...
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