Samples Free-Response Questions

Step 1 Do a restatement of the general experiment. In this case, I would draw a sketch of the apparatus before and after the reaction, labeling everything. This will get rid of all the words and enable you to visualize the experiment. 

Initial Empty test tube = 42.8973 g Ag strip = 1.7838 g Final Coated strip = 1.9342 g 

Step 2 Write a balanced chemical equation that describes the reaction, silver + chlorine gas yields silver chloride. 

Step 3 Begin to answer the questions asked. Remember to give a brief restatement for each question, to label each specific question so that the grader knows which question you are answering, and to underline the conclusion(s) where necessary. 

(a) (1) Restatement Number of moles of chlorine gas that reacted, mass of chlorine that reacted 

---