Game sheets, CLUES, game money, pencils and paper are supplied. Each team may bring a non-programmable calculator if desired, but no other help is allowed (including coaches).

1. There will be two tables, a team table and a clue table. Each team will gather at their team table.
2. Each team table will have an envelope containing supplies, including a table of elements with some of their properties, and $300.00 game money. . Do not open the envelope until instructed.
3. a) When the contest begins, one team member will cross the floor to the CLUE table to purchase an unknown substance to be identified. The substance will cost between $10.00 and $25.00 of game money. Note that only one team member may be in line at a time.
   b) The team member will randomly pull a numbered disk from the bag to identify which substance will be played. Bring this disk back to the CLUE table, for each transaction, to identify your substance.
4. A team member may then purchase CLUES, one at a time, with prices ranging from $10.00 to $50.00 each. Each clue, given verbally, is communicated, by memory, back to the team table for consideration. The team has a master sheet for recording the clues and listing the substances.
5. The team, through it's representative, may submit a proposed identity for the substance, accompanied by the payment of $25.00. If the substance has been correctly identified the team will earn the sum of $300.00.
6. If the substance has been incorrectly identified, the team may continue to purchase more clues, submit subsequent proposed identities (at $25.00 each), or abandon that particular substance and purchase a new one.
7. The game will last for 30 minutes and will conclude with the transaction in progress at the end of 30 minutes. ALL SUPPLIES MUST be returned in the envelope to avoid disqualification.

NOTE:
1. Calculators are allowed.
2. The quantitative clues are often approximate only, and may have up to ± 10% error. (This reflects the reality of measurement errors in experimental work due to equipment, impurity of samples, technique etc.)

Raw Score = amount of game money owned by the team at the end of the event.

Team Score =  

H = Highest Raw Score; L = Lowest Raw Score; S = Your Raw Score. This formula gives 100 points to the highest raw score, 25 points to the lowest raw score, and scales the rest linearly.