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Science
Chemistry
Question | Answer |
---|---|
Name 3 types of nuclear radiation | Alpha particles, Beta particles, Gamma Rays |
Describe an atom | Nucleus containing protons (positive charge) and neutrons (neutral charge) surrounded by electrons (negative charge) that sit on surrounding rings. |
Describe the penetration of Alpha particles | Highly ionizing, unable to go very far through matter, brought to rest by a few centimeters of air |
Describe the penetration of Beta particles | more penetrating then alpha, less damaging to living tissue due to spread out ionizations |
Describe the penetration of Gamma Rays | highly penetrating, less ionizing then alpha, radiation can occur throughout a body, interacts with matter through photoelectric effect, compton scattering, or pair production. |
Define ionizing | when ions change the charge of an atom and make it unstable |
Atomic number is the same as _____ and ______ | number of protons and number of electrons |
Atomic mass/weight = _________ + __________ | Number of protons + number of neutrons |
What is an isotope | a version of an atom with a different number of neutrons |
what's the difference between Stable and unstable nuclei | stable is normal and unstable is unbalanced and differently charged causing it to break apart overtime. |
what's a radioisotope | a special type of atom that gives off energy in the form of radiation |
what's a half life | the time it takes for half of the atoms to decay. This occurs and half's over and over. |
what is the top left number in a square on the periodic table | atomic number or proton number |
what is the bottom number in a square on the periodic table | atomic mass/weight |