Question: What is the most prevalent natural isotope of uranium?
Answer: uranium-238

Question: What percentage of natural uranium is isotope 238?
Answer: 99.2742%

Question: Along with gas cooled reactors, what type of reactor doesn't use uranium-235?
Answer: pressurised heavy water

Question: What is uranium used for most often in the military?
Answer: high-density penetrators

Question: Along with titanium, what element often makes up the portion of high-density penetrators not made of depleted uranium?
Answer: molybdenum

Question: What percentage of high-density penetrators is not made up of depleted uranium?
Answer: 1–2%

Question: Along with the Balkans, in what geographical location did a war take place where the UK used depleted uranium munitions?
Answer: Persian Gulf

Question: What illness is possibly tied to the use of depleted uranium munitions?
Answer: Gulf War Syndrome

Question: Who discovered uranium?
Answer: Martin Heinrich Klaproth

Question: In what year did the discovery of uranium occur?
Answer: 1789

Question: In what city was uranium discovered?
Answer: Berlin

Question: What did Klaproth probably create when he dissolved pitchblende in nitric acid?
Answer: sodium diuranate

Question: Who discovered the planet Uranus?
Answer: William Herschel

Question: What percentage range of uranium oxide is usually contained in low-grade uranium ore?
Answer: 0.01 to 0.25%

Question: Along with underground, open pit and in-situ leaching, what sort of mining is used to mine uranium?
Answer: borehole

Question: In what country are high-grade uranium ores notably found?
Answer: Canada

Question: In what province of Canada is the Athabasca Basin?
Answer: Saskatchewan

Question: What is the average percentage of uranium oxide contained in the ores mined in the Athabasca Basin?
Answer: 23%

Question: What was the uranium-based bomb made by the US in World War II called?
Answer: Little Boy

Question: What was the codename of the plutonium-based bomb created in the Second World War?
Answer: Fat Man

Question: On what date was Little Boy detonated?
Answer: 6 August 1945

Question: What was the equivalent yield in TNT of the Little Boy bomb, in tonnes?
Answer: 12,500

Question: Over what city was Little Boy detonated?
Answer: Hiroshima

Question: As of 2005, what country was the largest producer of uranium oxides?
Answer: Canada

Question: What percentage of world uranium oxide production is produced by Argentina?
Answer: 2.1%

Question: What country produced 5.5% of the world's concentrated uranium oxide in 2005?
Answer: Uzbekistan

Question: How many countries produced concentrated uranium oxides in 2005?
Answer: seventeen

Question: How many tonnes of uranium was Australia expected to produce in 2009?
Answer: 9,430

Question: Who was the Soviet Union's opponent in the Cold War?
Answer: United States

Question: How many nuclear warheads can be made with 540 metric tons of highly enriched weapons grade uranium?
Answer: 40,000

Question: What was the expenditure of the Material Protection, Control, and Accounting Program between 1993 and 2005?
Answer: US $550 million

Question: What is another term for uranium that is enriched?
Answer: weapons grade

Question: Approximately how many times did police capture shipments of bomb-grade plutonium or uranium between 1993 and 2005?
Answer: 16

Question: What is the color of U4+?
Answer: green

Question: What state is represented by the UO2+ 2 ion?
Answer: uranium(VI)

Question: Along with uranyl sulfate and uranyl chloride, what compound is formed by the UO2+ 2 ion?
Answer: uranyl carbonate

Question: What common complex is formed by the UO2+ 2 ion with organic chelating agents?
Answer: uranyl acetate

Question: What microorganism can notably absorb a very high concentrate of uranium?
Answer: Citrobacter

Question: What is given to Citrobacter to cause it to absorb uranyl ions?
Answer: glycerol phosphate

Question: What lichen is known to absorb a uranium concentration nearly 300 times higher than the amount in the environment?
Answer: Trapelia involuta

Question: What protobacterium notably bioremediates ground water uranium?
Answer: Geobacter

Question: What fungus is known to cause uranium content in its symbiotic plant roots to increase?
Answer: Glomus intraradices

Question: At what temperature range in degrees Fahrenheit will uranium metal form uranium hydride?
Answer: 482 to 572

Question: What does uranium metal react with to create uranium hydride?
Answer: hydrogen

Question: Above what temperature is the β form of uranium hydride created?
Answer: 250 °C

Question: Along with uranium carbide and halide, what type of compound is often created with uranium hydride?
Answer: nitride

Question: How many crystal modifications of uranium hydride are extant?
Answer: Two

Question: Along with uranium monocarbide and uranium dicarbide, what is a notable carbide of uranium?
Answer: diuranium tricarbide

Question: Below what temperature is U2C3 stable?
Answer: 1800 °C

Question: Between what percent fraction range of uranium-235 is uranium regarded as enriched?
Answer: 3% and 5%

Question: In what year did the cost of uranium notably begin to increase?
Answer: 2001

Question: What is the maximum uranium-235 isotope concentration for uranium to be considered depleted?
Answer: 0.3%

Question: What was the price of a kilogram of depleted uranium hexafluoride in 2001?
Answer: $5

Question: How much did a kilogram of depleted uranium hexafluoride cost as of July 2007?
Answer: $130

Question: Along with the heart, brain and liver, what system is notably affected by exposure to uranium?
Answer: kidney

Question: What is the main form of 238U decay?
Answer: alpha radiation

Question: What type of uranium compounds are uranium trioxide and uranyl nitrate?
Answer: hexavalent

Question: At what temperature will grains of uranium metal spontaneously ignite in air?
Answer: room

Question: What is the name of the most widely used enrichment process?
Answer: gas centrifuge

Question: What compound is UF6?
Answer: uranium hexafluoride

Question: What enrichment process was used by the Manhattan Project?
Answer: gaseous diffusion

Question: In the gaseous diffusion process, what is diffused through a silver-zinc membrane?
Answer: uranium hexafluoride

Question: How does the weight of uranium-238 compare to that of uranium-235?
Answer: heavier

Question: What is uranium's symbol on the Periodic Table of Elements?
Answer: U

Question: What is the atomic number of uranium?
Answer: 92

Question: What color is uranium?
Answer: silvery-white

Question: How many valence electrons are contained in an atom of uranium?
Answer: 6

Question: Of what series in the Periodic Table of Elements is uranium a part?
Answer: actinide

Question: What non-metal elements does uranium notably not react to?
Answer: noble gases

Question: What coats uranium metal in air?
Answer: uranium oxide

Question: Along with nitric acids, what acids dissolve uranium?
Answer: Hydrochloric

Question: What is a notable form uranium ore is converted into after extraction?
Answer: uranium dioxide

Question: What reacts with finely divided uranium?
Answer: cold water

Question: During what war was uranium-235 first used to create nuclear weapons?
Answer: World War II

Question: From what isotope of uranium is plutonium-239 derived?
Answer: 238

Question: What is mixed with tritium and experiences nuclear fusion in a fission/fusion bomb?
Answer: deuterium

Question: What is another name for a fission/fusion bomb?
Answer: thermonuclear weapon

Question: What does non-fissile mean?
Answer: unenriched

Question: What product of uranium was used as toner?
Answer: nitrate

Question: Along with uranyl formate, what product of uranium is used in transmission electron microscopy?
Answer: Uranyl acetate

Question: What light bulbs use lamp filaments containing uranium?
Answer: stage

Question: Along with leather, what industry uses uranium in dyes and stains?
Answer: wood