Study guides, Class notes & Summaries

If a sample of radon is taken from a room that is known to be at 125pCi/L and is kept in a well sealed container, what will the approximate radon activity be within the container after eight days? - 31.3 Radon decay products have (or )longer shorter half lives than radon gas? - Shorter The ionization of an otherwise electrically neutral atom is used in measuring radiation. Which process best describes ionization? - An uncharged atom gains or loses orbital electrons ()and becomes electrical...

City the annual % of radiation exposure from indoor radon to the general public. - 37% (think of the pie graph) What part of radon is the greatest risk to humans? - Radon decay products (RDPs) What is the level at which US citizens are urged to take action to fix indoor radon levels? - 4.0 pCi/L (of air) What organization produced the most definitive report of scientific data on indoor radon? - BEIR - Biological Effects of Ionizing Radiation

____ are the extremely small particles of which we, and everything around us, are made. A. Radon B. Particles C. Ions D. Atoms - D. Atoms If one atom were the size of the Houston Astrodome, its nucleus would be roughly the size of a _____. A. submarine B. pea C. airplane D. building - B. pea

Radon Gas Characteristics - -not detected by human senses -naturally occurring -chemically unreactive The nucleus of an atom consists of ____________ and ______________ - protons and neutrons What characteristic of an atom determines the charge? - Electrons What characteristic of an atom determines the isotope? - Nuetrons What characteristic of an atom determines the element I.D? - Protons

A _____ refers to the series of transformations that a given radionuclide will undergo, as well as the kind of radiation it emits, which are characteristic of the radionuclide - decay chain _____ are the extremely small particles of which we, and everything around us, are made. - atoms If one atom were the size of the Houston Astrodome, its nucleus would be roughly the size of a _____. - pea T/F: The balance of the forces in the nucleus of an atom determines whether a nucleus is stable or...

What is the EPA action level for Radon? - 4 pCi/L What is the risk of smokers and non-smokers getting lung cancer from Radon? - 62/1000 smokers 7/1000 non smokers What determines the risk of getting lung cancer from Radon? - Concentration of Radon and RDPs and Length of Exposure Hoe does Radon enter the home? - Radon gas moves through the ground due to air pressure differentials in the home, and up into the home through cracks or other openings in the foundation. Can also enter through w...

for most elements, the number of neutrons in the nucleus is? - greater than the number of protons the number of protons and neutrons in the nucleus is known as? - the Mass number the nucleus of an atom contains approx._________% of atomic mass - 95% when the nucleus is formed, a certain amount of mass is destroyed and converted to energy called - nuclear glue, the binding energy of the nucleus. in photodisintegration - a very high energy photon interacts with a nucleus and the most likely...

What does it mean for a radon decay product to be "plated out"? - It has attached to a non- breathable object If a radon decay product attaches to a solid object, such as a wall, it... - ...can no longer be inhaled. What is a half-life? - The time required for half of the atoms of a radioactive element to decay. Which type of radiation is responsible for the most cellular damage associated with radon and radon decay products? - Alpha The negatively charged subatomic particle that orbit...