Differentiation Modifications If time allows, have students revisit their initial predictions and planning tools from Activity 3.1. Comparing their early predictions to their final explanations may show a greater change in their thinking over time. Because this is the first time students will use the Explanations Tool, review the questions ahead of time so they understand the purpose and structure of the tool. Extending the Learning Students can explore other phenomena where carbon dioxide dissolves in water and forms carbonic acid: Carbonic acid in rain water dissolves limestone. This is how most caves are formed. https://www.bgs.ac.uk/mendips/caveskarst/caveform.htm Carbon dioxide dissolves in ocean water, and the resulting carbonic acid makes the oceans more acidic, damaging coral reefs and populations of shellfish. https://www.nationalgeographic.com/environment/oceans/critical-issues-ocean-acidification/ Bread dough and cake batter have bubbles of carbon dioxide like soda water, but the “stickiness” of the dough prevents the bubbles from escaping. This is how bread dough rises. https://www.compoundchem.com/wp-content/uploads/2016/01/The-Chemistry-of-Bread-Making.pdf
