Chemistry

587 questions

Start playing

Leaderboard

Nobody has played this category yet.

Hardest questions

  1. Oxygen "always" has an oxidation number of -2. But there are several exceptions. is has an oxidation number of +2 in the compound: 1301
  2. Fructose is a Ketohexose and Glucose is a(n): 1279
  3. The most abundant chemical element in the universe is: 1276
  4. The chemical ____________ is named after a sprite in german folklore. 1272
  5. On the Periodic Table, there are a total of: 1265
  6. What is a precursor to vitamin A? 1261
  7. What is "Diamond Ink" 1249
  8. All of the following elements are classified as Akaline Earth Metals except for: 1243
  9. In Chemistry, an amalgam is an alloy that includes; 1243
  10. Which is NOT an element of the periodic table? 1243