CHEM101 Lecture Notes - Neon, Noble Gas, Argon

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maimailinn6

11 Apr 2023

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BYU-Idaho

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Chemistry

Course

CHEM101

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10. neon (ne): a noble gas that is used in lighting and advertising signs. 11. sodium (na): a metal that is used in alloys, soap, and as a coolant in nuclear reactors. 12. magnesium (mg): a metal that is used in alloys, reworks, and as a supplement for humans and animals. 13. aluminum (al): a metal that is used in construction, packaging, and aerospace industries. 14. silicon (si): a metalloid that is the basis for semiconductors and computer chips. 15. phosphorus (p): a nonmetal that is essential for life and is used in fertilizers and detergents. 16. sulfur (s): a nonmetal that is used in fertilizers, pharmaceuticals, and gunpowder. 17. chlorine (cl): a highly reactive nonmetal that is used in water treatment and as a disinfectant. 18. argon (ar): a noble gas that is used in lighting and welding. 19. potassium (k): a metal that is essential for life and is used in fertilizers and as a coolant in nuclear reactors.

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From the following list of elements—Ar, H, Ga, Al, Ca, Br, Ge, K, O—pick the one that best fits each description. Use each element only once: (a) an alkali metal, (b) an alkaline earth metal, (c) a noble gas, (d) a halogen, (e) a metalloid, (f) a nonmetal listed in group 1A, (g) a metal that forms a 3+ ion, (h) a nonmetal that forms a 2– ion, (i) an element that resembles aluminum.

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For the following table, match the elements description with the choices in the last column. Put the letter of your answer into the first column labeled âanswerâ. Answer Description Choices The element that forms long twisted chains of covalent bonds and favors the -2 oxidation state A) lithium The element in group 1A that could also be placed in group 7A B) potassium The halogen that removes electrons from almost any substance that it comes in contact C) iodine The element that has an allotrope that filters out UV rays D) xenon The element that is released as hydrogen peroxide decomposes E) barium An alkaline earth metal used in fireworks to produce the color green F) sulfur The halogen has the same density as bromine G) tellurium The group 1A metal that produces a violet flame H) hydrogen The alkali metal that was once used in 7-up I) fluorine A group 7A non-metal that is a dark purple metallic looking solid whose name means violet J) sodium The most reactive noble gas K) krypton A non-metal that exists as a molecule of eight atoms L) chlorine A soft metal that violently reacts with water to produce hydrogen M) oxygen

CHEM101 Lecture Notes - Neon, Noble Gas, Argon

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