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Learning to Solve Problems

To determine the number of carbon atoms present, we must multiply the number of molecules by 7, since each molecule of isopentyl acetate contains seven carbon atoms  [Pg.87]

To show the correct number of significant figures in each calculation, we round after each step. In your calculations, always carry extra significant figures through to the end then round. [Pg.87]

Note In keeping with our practice of always showing the correct number of significant figures, we have rounded after each step. However, if extra digits are carried throughout this problem, the final answer rounds to 3 X 10 . [Pg.87]

Pigeon holes can be used for sorting and classifying objects like mail. [Pg.87]

One of the great rewards of studying chemistry is to become a good problem solver. Being able to solve complex problems is a talent that will serve you well in all walks of life. It is our purpose in this text to help you learn to solve problems in a flexible, creative way based on understanding the fundamental ideas of chemistry. We call this approach conceptual problem solving. [Pg.87]

PROBLEM SOLVING DOES THE ANSWER MAKE SENSE  [Pg.177]

When you finish a problem, always think about the reasonableness of your answers. In Example 8.4, 5.68 mg of silicon is clearly much less than 1 mole of silicon (which has a mass of 28.09 g), so the final answer of [Pg.177]

22 X 10 ° atoms (compared to 6.022 x 10 atoms in a mole) at least lies in the right direction. That is, 1.22 x 10 ° atoms is a smaller number than [Pg.177]

022 X 10. Also, always include the units as you perform calculations and make sure the correct units are obtained at the end. Paying careful attention to units and making this type of general check can help you detect errors such as an inverted conversion factor or a number that was incorrectly entered into your calculator. [Pg.177]

As you can see, the problems are getting more complicated to solve. In the next section we will discuss strategies that will help you become a better problem solver. [Pg.177]

While actively studying our solutions to problems is helpful, at some point you will need to know how to think through these problems on your own. If we help you too much as you solve a problem, you won t really learn effectively. If we always drive, you won t interact as meaningfully with the material. Eventually you need to learn to drive yourself We will provide more help at the beginning of the text and less as we proceed to later chapters. [Pg.93]

There are two fundamentally different ways you might use to approach a problem. One way emphasizes memorization. We might call this the pigeonholing method. In this approach, the first step is to label the problem—to decide in which pigeonhole it fits. The pigeonholing method requires that we provide you with a set of steps that you memorize and store in the appropriate slot for each different problem you encounter. The difficulty with this method is that it requires a new pigeonhole each time a problem is changed by even a small amount. [Pg.93]

Consider the driving analogy again. Suppose you have memorized how to drive from your house to the grocery store. Do you know how to drive back from the grocery store to your house Not necessarily. If you have only memorized the directions and do not understand fundamental principles such as I traveled north to get to the store, so my house is south of the store, you may find yourself stranded. In a more complicated example, suppose you know how to get from your house to the store (and back) and from your house to the library (and back). Can you get from the library to the store without having to go back home Probably not if you have only memorized directions and you do not have a big picture of where your house, the store, and the library are relative to one another. [Pg.93]


With a combination of user-friendly software and classic algorithms, students learn to solve problems through reasoning rather than memorization. [Pg.1]

Although reviewing your lecture notes and reading your textbook are important, why does the study of chemistry depend so much on problem solving Can you learn to solve problems yourself just by looking at the solved examples in your textbook or study guide Discuss. [Pg.13]

Chi, M.T.H., Bassok, M., Lewis M.W., Reimann, P., Glaser, R.1989). Self-Explanations how students study and use examples in learning to solve problems. Cognitive Science, 13, 145-182. [Pg.169]

Jonassen, D. H. (2011). Learning to solve problems A handbook for designing problemsolving learning environments. New York Routledge. [Pg.180]

Learning to solve problems can be aided by teaching the steps in systematic problem solving ... [Pg.277]

Molar Mass Learning to Solve Problems 3.8 Compound Chemical Equations Chemical Reactions 3.11 Products The Concept of Limiting Reactant... [Pg.81]


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