Chemistry 1.4 Lesson Check

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What are the three steps for solving numeric problems

1. Analyze 2. Calculate 3. Evaluate

What are the two steps for solving nonnumeric problems?

1. Analyze 2. Solve

What are the two general steps in successful problem solving?

1. Develop a plan 2. Implement the plan

How are the processes for solving numeric and nonnumeric problems similar? In what way are they different?

In both cases, the solver analyzes the problem, makes a plan, carries out the plan. Problems with numeric answers require that the answers be evaluated to see if they are reasonable.

Read the following conversion problem, and then answer the questions. There are 3600 seconds in an hour. How many seconds are there in one day? a. Identify the known and unknown b. What relationship between the known and unknown do you need to solve the problem? c. Calculate the answer to the problem. d. evaluate your answer and explain why your answer makes sense

a. known: 3600 seconds = 1 hour unknown: ? seconds = 1 day b. 24 hours = 1 day c. 3600 seconds/hour x 24 hours/day = 86.400 seconds/day d. 86,400 seconds in one day seems reasonable in relation to 3600 seconds in 1 hour. The answer has the correct units, and the relationship used is correct.


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