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Which statements describe half-life? Check all that apply. Each isotope has a half-life that is different from the half-life of other isotopes. All isotopes have the same half-life. The half-life of an isotope is always...
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ess of radioactive decay. You will examine how long it takes for an isotope to decay. In the space below, write a scientific question that you will answer by doing this experiment. How long does it take for 90% of a samp...
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In this lab you will use a simulation to explore the process of radioactive decay. You will examine how long it takes for an isotope to decay. In the space below, write a scientific question that you will answer by doing...
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Which statements describe isotopes? Check all that apply. Isotopes of the same element have the same number of protons. Isotopes of the same element have the same number of neutrons. All isotopes are unstable. Some isoto...
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What is the energy equivalent of an object with a mass of 2.5 kg? 5.5 × 108 J 7.5 × 108 J 3.6 × 1016 J 2.25 × 1017 J
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The diagram shows a model of a nuclear change. An illustration of a nuclear reactor. There are 3 parallel lines sticking half out of the reactor labeled rods containing uranium. There are parallel rods in the reactor lab...
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Trudy writes an expression to calculate the mass defect of a carbon-14 nucleus using the symbols in the table. A 2 column table with 4 rows. The first column is labeled quantity with entries mass of carbon-14 nucleus, ma...
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Gazala makes a graphic organizer to compare nuclear fission and nuclear fusion. A venn diagram with 2 intersecting circles The circle on the left is labeled fusion. The circle on the right is labeled fission. There is a...
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Which are advantages of using nuclear reactors to generate electricity? Select 3 options. Nuclear power produces no hazardous byproducts. Nuclear power has a high output. Nuclear power uses nonharmful fuel. Nuclear power...
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What conditions are required for nuclear fusion? high temperature and low pressure high temperature and high pressure low temperature and high pressure low temperature and low pressure
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Which statement describes why energy is released in a nuclear fusion reaction based on mass-energy equivalence? For large nuclei, the mass of the original nucleus is greater than the mass of the products. For large nucle...
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Carla sees an equation that models a nuclear change. Superscript 2 Subscript 1 Baseline H + Superscript 3 Subscript 1 Baseline H yields Superscript 4 Subscript 2 Baseline H e + Superscript 1 Subscript 0 Baseline n Which...
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What is the energy equivalent of an object with a mass of 1.05 g? 3.15 × 105 J 3.15 × 108 J 9.45 × 1013 J 9.45 × 1016 J
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The starting materials in a nuclear change have a total mass of 2.3465 × 10–27 kg. After the change, the resulting materials have a mass of 2.3148 × 10–27 kg. How much energy was released during the change? 2.85 × 10–12...
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Which characteristics of a radioisotope make it useful for diagnosing medical problems? a long half-life and it is taken up by a specific part of the body a long half-life and it is not taken up by the body a short half-...
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What did the accident at the nuclear power plant in Chernobyl in 1986 demonstrate about the use of nuclear power that had not been previously demonstrated? The byproducts of the process are radioactive. The generation of...
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The graph shows all of the stable isotopes of elements according to the numbers of protons and neutrons in their nuclei. A graph titled zone of nuclear stability with number of protons from 0 to 80 on the x-axis with num...
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Which is not a form of ionizing radiation? ultraviolet light gamma rays X-rays infrared light
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Archaeologists use radioactive decay of an isotope of the element because it has a fairly short half-life and is found in anything that was once living.
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How does gamma decay differ from both alpha decay and beta decay? No change in mass number occurs. A nucleus becomes more stable. No new element forms. A nucleus releases protons and neutrons.
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Which are methods of reducing exposure to ionizing radiation? Check all that apply. using a lead apron during medical X-rays picking up radioactive material by hand to avoid dropping it taking an X-ray image of large are...
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The table lists several radioisotopes that have technological uses. A 1 column table with 4 rows labeled radioisotope with entries uranium-238, carbon-14, iodine-131, technetium-99. Which radioisotope would be used by bo...
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The half-life of cobalt-60 is 5 years. How old is a sample of cobalt-60 if only one-eighth of the original sample is still cobalt-60? 5 years 10 years 15 years 20 years
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The emission of light from a radioisotope occurs during decay.
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A bar magnet is placed on a table so that the north pole faces right. Which statement describes the magnetic field lines 2 cm above the table? They are pointing down into the table. They are pointing right to left. They...
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