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Chemical element: Quiz

  
  
  

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Question 1: Although precursors to this table exist, its invention is generally credited to Russian chemist ________ in 1869.
Dmitri MendeleevRussiansPeriodic tableAlexander Blok

Question 2: In the second half of the twentieth century physics laboratories became able to produce nuclei of chemical elements that have a ________ too short for them to remain in any appreciable amounts.
Half-lifeCosmic rayNuclear fissionRadioactive decay

Question 3: ________ had sixty-six elements in his periodic table of 1869.
Dmitri MendeleevRussiansRussiaAlexander Blok

Question 4: In this typographical system chemical symbols are not used as mere abbreviations - though each consists of letters of the ________ - they are symbols intended to be used by peoples of all languages and alphabets.
Latin alphabetPhoenician alphabetRunic alphabetArabic alphabet

Question 5: [8] The first modern list of chemical elements was given in ________'s 1789 Elements of Chemistry, which contained thirty-three elements, including light and caloric.
Jean le Rond d'AlembertIsaac NewtonAdam SmithAntoine Lavoisier

Question 6: These 94 elements, and also possibly element 98 ________, have been detected in the universe at large, in the spectra of stars and also supernovae, where short-lived radioactive elements are newly being made.
PlutoniumCaliforniumCuriumUranium

Question 7: [16] However ________ can still closely resemble the primordial abundance, unless it has been enriched by some means.
Outer spaceUniverseVacuumSun

Question 8: In 1524, Swiss chemist ________ adopted Aristotle’s four element theory, but reasoned that they appeared in bodies as Geber’s three principles.
GermanyNazi GermanyParacelsusSpain

Question 9: The ________ of an element, Z, is equal to the number of protons that defines the element.
HafniumAtomic numberChemical elementPeriodic table

Question 10: In this example, carbon-12 and carbon-13 are stable atoms, but carbon-14 is unstable; it is radioactive, undergoing ________ into nitrogen-14.
Beta decayAlpha decayNuclear fusionNuclear fission
















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