1. Coral Reefs Lab Part 1: Dry Ice Part 2: Computer Simulation Part 3: Vocabulary/ Lab Report

2. STATION 1—Group # 1-3: Dry Ice Lab Each group should have a beaker, water, penny, pH indicator (bromothymol blue ) Write down the procedures to this part for your lab report individually WHILE conducting the lab

3. STATION 2—Group # 4-6: Computer Simulation Follow the procedures on the lab guide given to you

5. -CO2 from earth’s atmosphere enters the ocean and reacts with water to form H2CO3 -H2CO3 disassociates immediately in water, releasing H+ and bicarbonate ions -bicarbonate ions also disassiociate, releasing additional H+ and forming Carbonate ions -free bicarbonate ions react with Calcium ions in the water, forming calcium bicarbonite -calcium bicarbonite then forms into CALCIUM CARBONITE and carbonic acid and H+ ions as a byproduct REACTIONS CAN GO IN BOTH DIRECTIONS= HELP WITH BUFFERING AGAINST Ph CHANGES

6. STATION 3—Group 7-12: Vocabulary/ Lab Report If you have not completed the other sections, start on the following vocabulary Bicarbonate Carbonate Aragonite Simulation pCO 2 atm Ppm buffer If you completed part 2, start your lab report (should be a combination of all parts)—if you do not have the guidelines please see me!

7. Lab Write Up Everything completed in your lab notebook Purpose Hypothesis Materials Procedures (in your own words!) Results Table completed Sketches with labels Print outs of your pictures Conclusion Refer to conclusion guide in “Lab Guidelines” hand out Be sure to answer the question at the end in an additional 5 th paragraph