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1. What do we call the process by which scientists quantify their observations of their surroundings?

1. What do we call the process by which scientists quantify their observations of their surroundings?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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EXAMPLE 3-4: MORE-COMPLEX UNIT CONVERSION Convert the density of iron from 7.874 g/cm³ into kg/m³. Solution g 7.874 (1000) (- 3 7 874000 kg 1kg) (100cm) = (²1000 m) = 7874 kg/m³ m³ 3 Notice in Example 3-4 that we needed three identical conversion factors to eliminate the cm³. We also placed cm in the numerator of the conversion factor because cm³ was in the denominator of the measure- ment. So you see that the problem tells you where to put the units. 3.1 SECTION REVIEW 1. What do we call the process by which scientists quantify their observations of their surroundings? 2. What is a dimension? 3. What measuring system is used by scientists around the world? 4. Explain how a measurement system is a model. Why is it important that scientists have a stan- dardized system? 5. Explain one of the three reasons for the almost worldwide usage of the SI. 6. What is the Sl fundamental unit for temperature, and on the basis of what physical constants is it defined? KILD 7. Write an equation that states the relationship between the given units, then write a conversion factor that could be used to convert the first unit to the second. (Example: Millimeters and meters are related by the equation 1000 mm = 1 m. The conversion factor 1 m/1000 mm should be used.) drenal a. grams and micrograms b. femtometers and meters c. liters and hectoliters d. gigahertz and hertz 8. Convert the following measurements. a. 3.8 x 10¹0 bytes to gigabytes b. 475 nm to meters c. 27.3 kL to milliliters d. 5.67 Mg to micrograms ind Measurements in Chemistry 57 زنان
Transcribed Image Text:EXAMPLE 3-4: MORE-COMPLEX UNIT CONVERSION Convert the density of iron from 7.874 g/cm³ into kg/m³. Solution g 7.874 (1000) (- 3 7 874000 kg 1kg) (100cm) = (²1000 m) = 7874 kg/m³ m³ 3 Notice in Example 3-4 that we needed three identical conversion factors to eliminate the cm³. We also placed cm in the numerator of the conversion factor because cm³ was in the denominator of the measure- ment. So you see that the problem tells you where to put the units. 3.1 SECTION REVIEW 1. What do we call the process by which scientists quantify their observations of their surroundings? 2. What is a dimension? 3. What measuring system is used by scientists around the world? 4. Explain how a measurement system is a model. Why is it important that scientists have a stan- dardized system? 5. Explain one of the three reasons for the almost worldwide usage of the SI. 6. What is the Sl fundamental unit for temperature, and on the basis of what physical constants is it defined? KILD 7. Write an equation that states the relationship between the given units, then write a conversion factor that could be used to convert the first unit to the second. (Example: Millimeters and meters are related by the equation 1000 mm = 1 m. The conversion factor 1 m/1000 mm should be used.) drenal a. grams and micrograms b. femtometers and meters c. liters and hectoliters d. gigahertz and hertz 8. Convert the following measurements. a. 3.8 x 10¹0 bytes to gigabytes b. 475 nm to meters c. 27.3 kL to milliliters d. 5.67 Mg to micrograms ind Measurements in Chemistry 57 زنان
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