Enter your students’ correct solutions into a draw on or before January 10, 2020. The prize is a pack of 30 Large Heat-Sensitive Periodic Tables donated by Educational Innovations (www.teachersource.com). Please have your students print their full name clearly, and send your students’ solutions to: Chem 13 News, Hidden elements 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 Canada and United States submissions only. Printable version hidden elements puzzle (PDF).
You can start in any square in a grid and can move either horizontally, vertically or diagonally to any neighboring square, but no square may be reused when finding an individual element.
For example, the element platinum can be found in the following grid by starting at the P and then following the letters that are bolded:
| Column 1 | Column 2 | Column 3 | Column 4 | Column 5 | |
|---|---|---|---|---|---|
| Row 1 | L | A | S | G | M |
| Row 2 | P | F | T | U | I |
| Row 3 | O | I | N | F | E |
There are nineteen different elements hidden in this grid below. Searching carefully, can you find all of them?
| Column 1 | Column 2 | Column 3 | Column 4 | Column 5 | Column 6 | Column 7 | |
|---|---|---|---|---|---|---|---|
| Row 1 | L | R | S | V | L | H | T |
| Row 2 | A | L | E | C | A | I | U |
| Row 3 | P | S | A | N | T | L | S |
| Row 4 | T | R | O | D | I | H | E |
| Row 5 | U | G | L | R | Z | U | M |
The nineteen elements are:
- __________________________ 11. __________________________
- __________________________ 12. __________________________
- __________________________ 13. __________________________
- __________________________ 14. __________________________
- __________________________ 15. __________________________
- __________________________ 16. __________________________
- __________________________ 17. __________________________
- __________________________ 18. __________________________
- ___________________________ 19. __________________________
- ___________________________
