How Can I Enhance My Chances of Success in Chemistry Class

Success in a chemistry class d ends largely on problem-solving ability. The sample problems throughout the text are designed to help you develop problem-solving skills. Each is divided into four steps Strategy, Setup, Solution, and Think About It. 

Strategy Read the problem carefully and determine what is being asked and what information is provided. The Strategy step is where you should think about what skills are required and lay out a plan for solving the problem. Give some thought to what you expect the result to be. If you are asked to determine the number of atoms in a sample of matter, for example, you should expect the answer to be a whole number. Determine what, if any, units should be associated with the result. When possible, make a ballpark estimate of the magnitude of the correct result, and make a note of yom estimate. 

Setup Next, gather the information necessary to solve the problem. Some of the information will have been given in the problem itself Other information, such as equations, constants, and tabulated data (including atomic masses) should also be brought together in this step. Write down and label clearly all of the information you will use to solve the problem. Be sure to write appropriate units with each piece of information. 

Finally, each sample problem is followed by at least one practice problem. This typically is a very similar problem that can be solved using the same strategy. Most sample problems also have a second practice problem that tests the same skills, but requires an approach slightly different from the one used to solve the preceding sample and practice problems. 

Regular use of the sample problems and practice problems in this text can help you develop an effective set of problemsolving skills. They can also help you assess whether you are ready to move on to the next new concepts. If yon straggle with the practice problems, then you probably need to review the corresponding sample problem and the concepts that led up to it. 

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