April 2019

Hidden chemical puzzle

Avi Ornstein, Classical Magnet School, Hartford, Connecticut

Chem Time Clock

Write the answers to the questions in the grid. One vertical column will be the chemical name of an over-the-counter medication. Printable hidden chemical puzzle

Enter your students’ correct solutions into a draw on or before October 1, 2019. The prize is a Chem Time Clock to be awarded to the teacher and is donated by Educational Innovations. Please have your students print their full name clearly and send your students’ solutions to: Chem 13 News, Hidden chemical puzzle, Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada; or email us. 
 

Clue
number		 Clue answer
1                                            
2                                            
3                                            
4                                            
5                                            
6                                            
7                                            
8                                            
9                                            
10                                            
11                                            
12                                            
13                                            
14                                            
15                                            
16                                            
17                                            
18                                            
19                                            
20                                            

Clues

  1. Anti-knocking agent added to gasoline until 1996 – (CH3CH2)4Pb
  2. O, S, Se, Te and Po 
  3. She won Nobel prizes in chemistry and physics
  4. Fruit sugar – C6H12O6 
  5. Oil of wintergreen – C8H8O3 
  6. Element reacts with compound to yield a different element and compound
  7. Used to treat skin ailments – KMnO4 
  8. Fuel for barbecue grills – C3H8 
  9. Petroleum refined for use in the internal combustion engine
  10. Father of chemistry (last name only)
  11. Main component of sand or glass – SiO2 
  12. Compound that carries genetic information (DNA)
  13. Relation between pressure, volume, Kelvin temperature and the number of moles (PV=nRT)
  14. Double ringed nucleotide in DNA
  15. A fungicide formerly used as a seed treatment – C6Cl6 
  16. Inert element in orange-red electrified glass tubes
  17. Reaction in which electrons are transferred from one atom to another (redox)
  18. Radioactive alkali metal
  19. In 1863 J. Wilbrand first prepared this explosive (TNT)
  20. Substance used as a moth repellent and deodorizer (PDCB) – C6H4Cl2    
     

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