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Solubility Curve Battleship Game Objective: By the end of this game you should be able to identify when a solution is supersaturated, saturated, or unsaturated. !
Set up Rules: 1) You have three battleships available: a) 2 points, b) 3 points, c) 5 points 2) Your ships can only be placed horizontally or vertically, NOT diagonally. 3) You can only place your battleship on grid points. For example the 2 point battleship shown below is at 90 grams of solute and 10 °C and 90 grams of solute and 20 °C. !
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4) One of your battleships must be placed where the entire ship lands where a supersaturated solution of that salt would occur. For example, in the above graph the battleship shown would be in the supersaturated region for NaNO3. 5) One of your battleships must be placed where at least one point lands where a saturated solution of that salt would occur. 6) One of your battleships must be placed where the entire ship lands where an unsaturated solution of that salt would occur. !
Pre-­‐Activity Questions: 1) Choose one salt from the solubility curve shown below: __________________________ 2) Draw your three battleships in the graph shown below following the rules described above. !
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Game Rules: The goal of the game is to sink all of your opponent’s ships just like in the game of battleship. Once all of your opponent’s ships have been sunk (all points on board have been hit) then you may guess your opponent’s solute that they chose. If you are correct you win the game. !
1) Player 1 begins by saying a point on the solubility graph such as “90 grams of solute and 10 °C”. 2) Player 2 tells Player 1 if it is a hit or a miss. If it is a miss Player 1 will mark that point on their graph with an open circle. If it is a hit Player 1 will mark that point on their graph with an X. 3) After Player 1 Hinishes his or her turn then Player 2 starts their turn. 4) Play continues until all ship points on a player’s board have been hit. 5) Once all ship points on a player’s board have been hit the player will guess which salt the other player chose to sink all ships. !
Post-­‐Game Questions: !
1) Which salt did your opponent choose? _________________ !
2) Which salt would form a supersaturated solution at a temperature of 70 °C with only 10 grams of solute?___________________ !
3) Room temperature is approximately 20 °C. How many grams of NaCl would be required to form a saturated solution at room temperature?___________________ !
4) You have a saturated solution of KCl at 50 °C. How many grams of KCl are present in 100 grams of water to create this solution?__________________________ !
5) The solution described in question four is cooled down to room temperature (20 °C). What type of solution do you have now? Explain. _____________________________________________________________________________________________ _____________________________________________________________________________________________ _____________________________________________________________________________________________ !
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Solubility Curves Battleship Board