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1.4 Chemistry Chemistry 1.4 Slide 1 of 27 1.4 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. Slide 2 of 27 © Copyright Pearson Prentice Hall 1.4 Problem Solving in Chemistry > Skills Used in Solving Problems Skills Used in Solving Problems What is a general approach to solving a problem? Slide 3 of 27 © Copyright Pearson Prentice Hall 1.4 Problem Solving in Chemistry > Skills Used in Solving Problems Effective problem solving always involves developing a plan and then implementing that plan. Slide 4 of 27 © Copyright Pearson Prentice Hall 1.4 Problem Solving in Chemistry > Skills Used in Solving Problems Shopping involves problem solving skills. Slide 5 of 27 © Copyright Pearson Prentice Hall 1.4 Problem Solving in Chemistry > Solving Numeric Problems Solving Numeric Problems What are the three steps for solving numeric problems? Slide 6 of 27 © Copyright Pearson Prentice Hall 1.4 Problem Solving in Chemistry > Solving Numeric Problems The steps for solving a numeric word problem are analyze, calculate, and evaluate. Slide 7 of 27 © Copyright Pearson Prentice Hall 1.4 Problem Solving in Chemistry > Solving Numeric Problems 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. Slide 8 of 27 © Copyright Pearson Prentice Hall 1.4 Problem Solving in Chemistry > Solving Numeric Problems 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. Slide 9 of 27 © Copyright Pearson Prentice Hall SAMPLE PROBLEM 1.1 Slide 10 of 27 © Copyright Pearson Prentice Hall SAMPLE PROBLEM 1.1 Figure 1.25 Map of Indianapolis Slide 11 of 27 © Copyright Pearson Prentice Hall SAMPLE PROBLEM 1.1 Solving Numeric Problems Slide 12 of 27 © Copyright Pearson Prentice Hall SAMPLE PROBLEM 1.1 Solving Numeric Problems Slide 13 of 27 © Copyright Pearson Prentice Hall SAMPLE PROBLEM 1.1 Solving Numeric Problems Slide 14 of 27 © Copyright Pearson Prentice Hall Practice Problems for Sample Problem 1.1 Solving Numeric Problems Problem Solving 1.27 Solve Problem 27 with the help of an interactive guided tutorial. Slide 15 of 27 © Copyright Pearson Prentice Hall 1.4 Problem Solving in Chemistry > Solving Conceptual Problems Solving Conceptual Problems What are the two steps for solving conceptual problems? Slide 16 of 27 © Copyright Pearson Prentice Hall 1.4 Problem Solving in Chemistry > Solving Conceptual Problems The steps for solving a conceptual problem are analyze and solve. Slide 17 of 27 © Copyright Pearson Prentice Hall Slide 18 of 27 © Copyright Pearson Prentice Hall Solving Conceptual Problems Slide 19 of 27 © Copyright Pearson Prentice Hall Solving Conceptual Problems Slide 20 of 27 © Copyright Pearson Prentice Hall Solving Conceptual Problems Slide 21 of 27 © Copyright Pearson Prentice Hall Practice Problems for Conceptual Problem 1.1 For Conceptual Problem 1.1 Problem Solving 1.29 Solve Problem 29 with the help of an interactive guided tutorial. Slide 22 of 27 © Copyright Pearson Prentice Hall 1.4 Section Quiz Assess students’ understanding of the concepts in Section 1.4 Continue to: -or- Launch: Section Quiz Slide 23 of 27 © Copyright Pearson Prentice Hall 1.4 Section Quiz 1. Effective problem solving always involves developing a plan and then a. evaluating the plan. b. doing calculations. c. making an estimate. d. implementing the plan. Slide 24 of 27 © Copyright Pearson Prentice Hall 1.4 Section Quiz 2. During the analyze step for solving a numeric word problem, you a. make an estimate of the answer using correct units. b. rearrange an equation to solve for an unknown. c. identify what is known and unknown and make a plan. d. convert a measurement from one unit to another. © Copyright Pearson Prentice Hall Slide 25 of 27 1.4 Section Quiz 3. The steps for solving a conceptual problem are a. solve and evaluate. b. analyze, solve, and evaluate. c. analyze and solve. d. analyze, calculate, and evaluate. Slide 26 of 27 © Copyright Pearson Prentice Hall Problem Solving in Chemistry > Chem ASAP Concept Map 1 Solve the Concept Map with the help of an interactive guided tutorial. Slide 27 of 27 © Copyright Pearson Prentice Hall END OF SHOW