1.4 Chemistry Chemistry 1 - Weeblynkscience.weebly.com/uploads/8/7/1/4/8714635/chapter01...Title chapter01_section04.ppt Author Nicolette Kimball Created Date 8/19/2014 12:22:40 AM

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1.4 Chemistry Chemistry 1.4

© Copyright Pearson Prentice Hall

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Problem Solving in Chemistry

Shape-sorter toys fascinate young children. Typically, the children try placing a shape in different holes until they find the right one. The trial-and-error approach is one method of problem solving, but it is usually not the best one.

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Skills Used in Solving Problems


What is a general approach to solving a problem?

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>Problem Solving in Chemistry


Effective problem solving always involves developing a plan and then implementing that plan.

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Shopping involves problem solving skills.

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Solving Numeric Problems


What are the three steps for solving numeric problems?

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The steps for solving a numeric word problem are analyze, calculate, and evaluate.

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Analyze

To solve a word problem, you must first determine where you are starting from (identify what is known) and where you are going (identify the unknown).

After you identify the known and the unknown, you need to make a plan for getting from the known to the unknown.

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Calculate

If you make an effective plan, doing the calculations is usually the easiest part of the process.

Evaluate

Check that your answer is reasonable and makes sense. Check that it has the correct unit and the correct number of significant figures.

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SAMPLE PROBLEM

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Figure 1.25 Map of Indianapolis


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Solving Numeric Problems 1.1


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Practice Problems


Problem Solving 1.27 Solve Problem 27 with the help of an interactive guided tutorial.

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Solving Conceptual Problems


What are the two steps for solving conceptual problems?

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The steps for solving a conceptual problem are analyze and solve.

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1.4 Chemistry Chemistry 1 - Weeblynkscience.weebly.com/uploads/8/7/1/4/8714635/chapter01...Title chapter01_section04.ppt Author Nicolette Kimball Created Date 8/19/2014 12:22:40 AM