Question

1. Did you expect the mass of the baggie after the chemical change to be the same as it was before you mixed the chemicals? Why or why not? (4 points)




2. Are the combined masses before and after the reaction the same or different? Explain your results. (4 points)




3. An indicator changes color when the acidity of a solution changes. What evidence is there that such a change took place? (4 points)




4. a. Write a word equation for the overall reaction that occurred in the baggie. The reactants are sodium bicarbonate and calcium chloride. The products are sodium chloride, calcium carbonate, carbon dioxide, and water. (4 points)




b. Write a balanced formula equation for the overall reaction that occurred in the baggie. (4 points)




5. Was a gas produced in the reaction? How can you tell? (4 points)




6. What is the formula for this gas? (4 points)