| #14, aired 2023-09-27 | HEY! THAT'S NOT AN ELEMENT! $100: Einsteinium,
curium,
snookium snookium |
| #8905, aired 2023-06-30 | SCIENCE & NATURE $1200: 4 chemical elements, including yttrium & erbium, were named for a village in this country Sweden |
| #8851, aired 2023-04-17 | ALPHABETICALLY FIRST $2000: Of the chemical elements that begin with "C" cadmium |
| #10, aired 2023-01-12 | WE'VE GOT CHEMISTRY $1200: The chemical elements are arrayed according to atomic number on this, a name indicating regular intervals periodic table |
| #8616, aired 2022-04-11 | CHEMICAL ELEMENTS $400: The balloons in one Macy's Thanksgiving Day parade use about 400,000 cubic feet of this gas helium |
| #8616, aired 2022-04-11 | CHEMICAL ELEMENTS $800: As a gas, oxygen is colorless, but in liquid form it's this color blue |
| #8616, aired 2022-04-11 | CHEMICAL ELEMENTS $1200: Electric vehicles have brought cash to Chile, a land with large reserves of this lightest metal element, used in batteries lithium |
| #8616, aired 2022-04-11 | CHEMICAL ELEMENTS $1600: The element actinium & its symbol are both first alphabetically; this element & its symbol are last zirconium |
| #8616, aired 2022-04-11 | CHEMICAL ELEMENTS $5,000 (Daily Double): Atomic number 100, this radioactive element is named for the scientist who directed the first controlled fission chain reaction fermium |
| #8599, aired 2022-03-17 | CHEMICAL PEOPLE $800: Around 600 B.C. Thales of Miletus devised a system in which this one of the 4 classical elements was the basis of all things water |
| #8414, aired 2021-06-03 | NEXT IN LINE $1600: Alphabetically:
xenon,
ytterbium,
yttrium... zinc |
| #8264, aired 2020-10-22 | CHEMICAL ELEMENTS $400: It has the atomic No. 1 & is the most abundant element in the universe hydrogen |
| #8264, aired 2020-10-22 | CHEMICAL ELEMENTS $800: An essential nutrient, this element, symbol K, is in bananas, lima beans & avocados potassium |
| #8264, aired 2020-10-22 | CHEMICAL ELEMENTS $1600: Elements that are gases at room temperature include argon, neon, krypton & this rare "foreign" noble gas used in lighting xenon |
| #8264, aired 2020-10-22 | CHEMICAL ELEMENTS $2000: Identified in 1886 by a Freiberg professor, this shiny gray element was named for its country of discovery germanium |
| #8264, aired 2020-10-22 | CHEMICAL ELEMENTS $4,000 (Daily Double): Lightweight & strong, this element is named for the group that preceded the Olympians in mythology titanium |
| #8210, aired 2020-04-24 | HERE'S LOOKING AT EUCLID $800: Despite this title, Euclid's famous treatise is about geometry, not about chemical substances Elements |
| #8094, aired 2019-11-14 | PHYSICS $800: About 75% of all chemical elements are in this class of substances, all good conductors because of an abundance of free electrons metals |
| #7766, aired 2018-05-21 | OLD NAMES FOR CHEMICAL ELEMENTS $400: Cuprum, used since neolithic times, is this metal copper |
| #7766, aired 2018-05-21 | OLD NAMES FOR CHEMICAL ELEMENTS $800: Aurum is this object of many a conquistador's quest gold |
| #7766, aired 2018-05-21 | OLD NAMES FOR CHEMICAL ELEMENTS $1200: Hydrargyrum, the first part of its old name, means "liquid" mercury |
| #7766, aired 2018-05-21 | OLD NAMES FOR CHEMICAL ELEMENTS $1600: The name of this profession that spends time with pipes might lead you to this old name for lead plumbum |
| #7766, aired 2018-05-21 | OLD NAMES FOR CHEMICAL ELEMENTS $2000: Stibium was the old name for this metallic element, hence the symbol Sb antimony |
| #7586, aired 2017-09-11 | HISTORY OF SCIENCE $400: This man announced his periodic law of the elements before the Russian Chemical Society in 1869 Mendeleyev |
| #7399, aired 2016-11-10 | THE ELEMENTS $2000: Alphabetically, it's the first chemical element to have a single-letter symbol boron |
| #7363, aired 2016-09-21 | SCIENCE $1000: Alphabetically, they are the last 2 chemical elements zinc & zirconium |
| #7334, aired 2016-06-30 | OLD NAMES FOR CHEMICAL ELEMENTS $400: Ferrum iron |
| #7334, aired 2016-06-30 | OLD NAMES FOR CHEMICAL ELEMENTS $800: Argentum silver |
| #7334, aired 2016-06-30 | OLD NAMES FOR CHEMICAL ELEMENTS $1200: Plumbum lead |
| #7334, aired 2016-06-30 | OLD NAMES FOR CHEMICAL ELEMENTS $2,000 (Daily Double): Natrium sodium |
| #7334, aired 2016-06-30 | OLD NAMES FOR CHEMICAL ELEMENTS $2000: Stannum tin |
| #7071, aired 2015-05-18 | THE ELEMENTS $1200: (Sarah of the Clue Crew demonstrates by mixing in a beaker.) When vinegar, hydrogen peroxide, water & table salt are mixed with a starch, a chemical reaction occurs; the solution turns purple, indicating this element was present in the salt iodine |
| #7027, aired 2015-03-17 | THE ELEMENTS $400: An adult man has about 1/8 ounce of this element whose chemical symbol comes from the Latin word for it, ferrum iron |
| #7027, aired 2015-03-17 | THE ELEMENTS $800: Hail hydrargyrum, the Latin word meaning "liquid silver" that gives this element its chemical symbol mercury |
| #7002, aired 2015-02-10 | CHEMICAL ELEMENT PAIRS $800: The first 2 transuranium elements neptunium & plutonium |
| #7002, aired 2015-02-10 | CHEMICAL ELEMENT PAIRS $1200: Symbols Os & Ir, they are the 2 densest naturally occurring elements osmium & iridium |
| #6891, aired 2014-07-28 | CHEMICAL ELEMENTS $400: By mass, it's the most abundant element in the Earth's crust & in your body oxygen |
| #6891, aired 2014-07-28 | CHEMICAL ELEMENTS $1200: This glow-in-the-dark element is the only one whose name ends in "us" phosphorus |
| #6891, aired 2014-07-28 | CHEMICAL ELEMENTS $1600: After "Omaha" or "Lincoln", an addressed envelope could have the 2 letters symbolizing this element Neon |
| #6891, aired 2014-07-28 | CHEMICAL ELEMENTS $2000: The name of ununoctium may lead you to this atomic number, the highest yet assigned 118 |
| #6891, aired 2014-07-28 | CHEMICAL ELEMENTS $2,200 (Daily Double): The Roman numeral for 100 is also the symbol for this element carbon |
| #6803, aired 2014-03-26 | CHEMICAL ELEMENTS IN POETRY $200: Countee Cullen:
"Some are teethed on a ____ spoon, with the stars strung for a rattle" silver |
| #6803, aired 2014-03-26 | CHEMICAL ELEMENTS IN POETRY $400: Thomas Nashe:
"Rich men, trust not in wealth; ____ cannot buy you health" gold |
| #6803, aired 2014-03-26 | CHEMICAL ELEMENTS IN POETRY $600: Whitman:
"You convicts in prison cells---you sentenced assassins chain'd and handcuff'd with ____" iron |
| #6803, aired 2014-03-26 | CHEMICAL ELEMENTS IN POETRY $800: Sandburg:
"It is here the nostrils rush the air to the lungs. it is here ____ clamors to be let in" oxygen |
| #6803, aired 2014-03-26 | CHEMICAL ELEMENTS IN POETRY $1000: Milton:
"With ever-burning ____ unconsum'd, such place eternal justice has prepar'd" sulphur |
| #6595, aired 2013-04-26 | ELEMENTS IN THE HUMAN BODY $200: These 2 chemical elements make up 100% of a glass of water & 75% of the human body hydrogen and oxygen |
| #6422, aired 2012-07-17 | CHEMICAL ELEMENTS $200: Atomic number 17, it's poisonous, smells bad & causes irritation to the nose, lungs & throat; put some in my pool, please! chlorine |
| #6422, aired 2012-07-17 | CHEMICAL ELEMENTS $400: Put it on a sign that when air is liquefied at -320 degrees, this element is left behind as a gas neon |
| #6422, aired 2012-07-17 | CHEMICAL ELEMENTS $600: If he were an ancient Roman, this giant might say, "Fe fi fo ferrum" the Iron Giant |
| #6422, aired 2012-07-17 | CHEMICAL ELEMENTS $800: Marlin & tilefish may contain high levels of this element, atomic number 80 mercury |
| #6422, aired 2012-07-17 | CHEMICAL ELEMENTS $1000: Glenn Seaborg & colleagues discovered this nuclear weapon ingredient on Feb. 23, 1941 plutonium |
| #6097, aired 2011-03-01 | THE ELEMENTS $400: Hg, its chemical symbol, is derived from the Latin hydrargyrum, "liquid silver" mercury |
| #5738, aired 2009-07-15 | SCIENCE EN ESPAÑOL $2000: Compuesto is one of these substances that's composed of 2 or more chemical elements a compound |
| #5633, aired 2009-02-18 | NEWLY DISCOVERED CHEMICAL ELEMENTS? $200: A privately owned apartment gains its strength from this element condominium |
| #5633, aired 2009-02-18 | NEWLY DISCOVERED CHEMICAL ELEMENTS? $400: A decorative fish dwelling is often made from this aquarium |
| #5633, aired 2009-02-18 | NEWLY DISCOVERED CHEMICAL ELEMENTS? $600: Most high-quality lecterns are made from this element podium |
| #5633, aired 2009-02-18 | NEWLY DISCOVERED CHEMICAL ELEMENTS? $800: Ingesting this element produces a mental disorder or a state of great excitement delirium |
| #5633, aired 2009-02-18 | NEWLY DISCOVERED CHEMICAL ELEMENTS? $1,000 (Daily Double): Homeostatis is a state of this element equilibrium |
| #5553, aired 2008-10-29 | 3-LETTER WORDS $200 (Daily Double): Of the chemical elements, it has the shortest name tin |
| #5207, aired 2007-04-10 | EPONYMOUS SCIENCE $3,000 (Daily Double): Nobel, Lise Meitner & this man are the 3 non-Nobel Prize-winning scientists who have chemical elements named for them Dmitri Mendeleev |
| #5116, aired 2006-12-04 | ASTRONOMY $800: These 2 elements make up over 98% of the sun's chemical composition hydrogen and helium |
| #4997, aired 2006-05-09 | ALPHABETICALLY FIRST $2000: Of non-radioactive chemical elements aluminum |
| #4307, aired 2003-04-29 | CHEMICAL ELEMENTS $200: This metal's "Age" began around 1200 B.C. & no, it didn't follow the Wash & Dry Age the Iron Age |
| #4307, aired 2003-04-29 | CHEMICAL ELEMENTS $400: Centrum multivitamins say they're "Complete from A to" this element zinc |
| #4307, aired 2003-04-29 | CHEMICAL ELEMENTS $600: Wondering what to do with your cadmium? Combine it with nickel to make the popular NiCad types of these batteries |
| #4307, aired 2003-04-29 | CHEMICAL ELEMENTS $800: Martin Klaproth named this radioactive element that he discovered in 1789 for a planet discovered in 1781 uranium |
| #4307, aired 2003-04-29 | CHEMICAL ELEMENTS $1000: At -37.93 degrees Fahrenheit, this metal becomes a solid mercury |
| #4254, aired 2003-02-13 | SCIENCE CLASS $400: (Cheryl of the Clue Crew reports from Colorado) As snowflakes are frozen water vapor, they're made up of these 2 chemical elements hydrogen & oxygen |
| #4239, aired 2003-01-23 | NAMES IN SCIENCE $1600: Among chemical elements, Es is Einsteinium; Bh is this element Bohrium (for Niels Bohr) |
| #3778, aired 2001-01-24 | CHEMICAL ELEMENTS GO POSTAL $200: The chemical symbol for cobalt is the U.S. postal abbreviation for this state Colorado (CO) |
| #3778, aired 2001-01-24 | CHEMICAL ELEMENTS GO POSTAL $400: It's no scandal that scandium's symbol is the postal abbreviation for this "Palmetto State" South Carolina (SC) |
| #3778, aired 2001-01-24 | CHEMICAL ELEMENTS GO POSTAL $600: A Cornhusker chemist might know the symbol of this gas matches the abbreviation of his state Neon (NE/Nebraska) |
| #3778, aired 2001-01-24 | CHEMICAL ELEMENTS GO POSTAL $1,000 (Daily Double): The postal abbreviation of the "Golden State" is the symbol of this common element Calcium (CA/California) |
| #3778, aired 2001-01-24 | CHEMICAL ELEMENTS GO POSTAL $1000: This "Flickertail State" shares its postal abbreviation with the chemical symbol for neodymium North Dakota (ND) |
| #3675, aired 2000-07-21 | JADED $500: The formula NaAlSi2O6 tells you these 4 chemical elements make up jadeite Sodium, aluminum, silicon & oxygen |
| #3602, aired 2000-04-11 | STEAM $100: They're the two chemical elements that make up steam hydrogen & oxygen |
| #3323, aired 1999-02-03 | THE ELEMENTS $2,000 (Daily Double): Its chemical symbol derives from the Latin word "natrium" Sodium (Na) |
| #3279, aired 1998-12-03 | THE OCEAN BLUE $500: As you'd expect, they're the 2 most abundant chemical elements in the dissolved solids found in seawater Sodium & chlorine |
| #3017, aired 1997-10-14 | ELEMENTARY, MY DEAR $200: As indicated by its chemical name, the 2 main elements in table salt are chlorine & this Sodium |
| #2950, aired 1997-05-30 | THE ELEMENTS $600: This element, chemical symbol V, was named after the Scandinavian goddess of beauty Vanadium |
| #1906, aired 1992-12-14 | "C" IN SCIENCE $200: It's the name of a chemical substance made up of 2 or more elements a compound |
| #1616, aired 1991-09-16 | SCIENCE $400: The first of the artificial elements after uranium, its chemical symbol is Np neptunium |
| #1327, aired 1990-05-15 | SCIENTISTS $400: Dmitri Mendeleyev developed this chemical classification system in Russia in the 1860s Periodic Table of Elements |
| #924, aired 1988-09-15 | PHYSICAL SCIENCE $800: It's defined as a combination of 2 or more elements which can be separated only by chemical means a compound |
| #716, aired 1987-10-19 | SCIENCE $2,000 (Daily Double): Any 2 chemical elements whose symbol begins with a letter other than that beginning its English name lead* & antimony** |
