Periodic message puzzle

 A molecular building game. Front and back of box, plus contents displayed.Can you translate this code, adding punctuation to get a clear message?

67 – 74 – 20 – 7 – 39 – 8 – 92 – 52 – 89 – 1 – 8 – 90 – 68 – 16 – 52 – 89 – 1 – 


68 – 16 – 20 – 7 – 8 – 9 – 52 – 7 – 4 – 92 – 113 – 68 – 8 – 53 – 6 – 74 – 2 – 90 – 


68 – 90 – 53 – 16 – 53 – 16 – 16 – 8 – 94 – 16 – 1 – 16 – 8 – 39 – 8 – 92 – 20 – 


7 – 19 – 102 – 74 – 74 – 1 – 85 – 9 – 89 – 117 – 90 – 8 – 34 – 52 – 89 – 1 – 68 – 


16 – 52 – 89 – 1 – 4 – 16 – 92 – 75 – 39 – 8 – 92 – 92 – 60 – 68 – 16 – 73 – 60 –


74 – 1 – 85 – 39 – 8 – 92 – 74 – 53 – 16 – 1 – 8 – 90 – 68 – 16 – 20 – 7 – 92 – 


60 – 68 – 16 – 73 – 60 

Printable version of the periodic message puzzle.

Enter your students’ correct solutions into a draw on or before November 1, 2019. The prize is for the teacher only and is donated by Educational Innovations (www.teachersource.com). Please have your students print their full name clearly, scan and send your students’ solutions to: Chem 13 News, Periodic message puzzle, Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1; or email kjackson@uwaterloo.ca, along with your school’s complete mailing address. Prizes are for Canadian and United States submissions only.