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Sodium: Quiz


Question 1: Elemental sodium does not occur naturally on Earth, but quickly oxidizes in ________ and is violently reactive with water, so it must be stored in an inert medium, such as a liquid hydrocarbon.
Atmosphere of EarthNatural environmentNatureHistory of the Earth

Question 2: Sodium makes up about 2.6% by weight of the ________'s crust, making it the sixth most abundant element overall[12] and the most abundant alkali metal.

Question 3: The D-line is one of the classified Fraunhofer lines observed in the visible spectrum of the Sun's ________.
ElectromagnetismMaxwell's equationsElectromagnetic radiationClassical electromagnetism

Question 4: The reaction with water produces very caustic ________ (lye) and highly flammable hydrogen gas.
Sodium carbonateSodium sulfateSodium hypochloriteSodium hydroxide

Question 5:
Sodium, Hydrogen and Zinc are all:
Reducing agents Alkali metals Dietary minerals Desiccants

Question 6:
Sodium, Hydrogen and Copper are all:
Nuclear reactor coolants Alkali metals Reducing agents Biology and pharmacology of chemical elements

Question 7: Acute neutron radiation exposure (e.g., from a nuclear ________) converts some of the stable 23Na in human blood plasma to 24Na.
Nuclear reactor technologyPlutoniumLouis SlotinCriticality accident

Question 8: Sodium compounds are important to the chemical, ________, metal, paper, petroleum, soap, and textile industries.
Cranberry glassBorosilicate glassMACORGlass

Question 9: Sodium is much more reactive than ________; a reactivity which can be further enhanced due to sodium's much lower melting point.

Question 10: Sodium is relatively abundant in stars and the D ________ of this element are among the most prominent in star light.
HeliumPhotonElectronSpectral line

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