1. Measurements In Chemistry
Chapter Two
Measurements In Chemistry

2. Measurements in Chemistry
CO 2.1
Measurements can never be exact; there is always some uncertainty.
© Richard Hamilton Smith/Corbis Outline
Copyright © Houghton Mifflin Company. All rights reserved.

3. Measurements in Chemistry cont’d
Fig. 2.1
Metric system units are becoming increasingly evident on highway signs.
David Frazier/Photo Researchers
Copyright © Houghton Mifflin Company. All rights reserved.

4. Measurements in Chemistry cont’d
Table 2.1
Copyright © Houghton Mifflin Company. All rights reserved.

5. Measurements in Chemistry cont’d
Fig. 2.2
Comparisons of the base metric system units of length, mass, and volume with common objects.
E.R. Degginger
Copyright © Houghton Mifflin Company. All rights reserved.

6. Measurements in Chemistry cont’d
Fig. 2.3
A cube 10 cm on a side is equal to 1 L; a cube 1 cm on a side is equal to 1 mL.
Copyright © Houghton Mifflin Company. All rights reserved.

7. Measurements in Chemistry cont’d
Fig. 2.4
The use of the concentration unit milligrams per deciliteris common in clinical laboratory reports dealing with the composition of human body fluids.
Copyright © Houghton Mifflin Company. All rights reserved.

8. Measurements in Chemistry cont’d
Fig 2.5
The scale on a measuring device determines the magnitude of the uncertainty for the recorded measurement.
Copyright © Houghton Mifflin Company. All rights reserved.

9. Measurements in Chemistry cont’d
CAG
Copyright © Houghton Mifflin Company. All rights reserved.

10. Measurements in Chemistry cont’d
Fig. 2.6
The digital readout on an electronic calculator usually shows more digits than are needed.
Copyright © Houghton Mifflin Company. All rights reserved.

11. Measurements in Chemistry cont’d
Fig. 2.7
It is experimentally determined that 1 inch equals 2.54 cm, or 1 cm equals inch
Copyright © Houghton Mifflin Company. All rights reserved.

12. Measurements in Chemistry cont’d
Table 2.2
Copyright © Houghton Mifflin Company. All rights reserved.

13. Measurements in Chemistry cont’d
CAG 2.1
Copyright © Houghton Mifflin Company. All rights reserved.

14. Measurements in Chemistry cont’d
Fig. 2.8
Both of these items have a mass of 23 grams, but they have very different volumes; therefore, their densities are different as well.
Copyright © Houghton Mifflin Company. All rights reserved.

15. Measurements in Chemistry cont’d
Table 2.3
Copyright © Houghton Mifflin Company. All rights reserved.

16. Measurements in Chemistry cont’d
Fig. 2.9
The penny is less dense than the mercury it floats on.
Copyright © Houghton Mifflin Company. All rights reserved.

17. Measurements in Chemistry cont’d
CC 2.1
Copyright © Houghton Mifflin Company. All rights reserved.

18. Measurements in Chemistry cont’d
Table 2.4
Copyright © Houghton Mifflin Company. All rights reserved.

19. Measurements in Chemistry cont’d
Fig 2.10
The relationships among the Celsius, Kelvin, and Fahrenheit temperature scales are determined by the degree sizes and the reference point values.
Copyright © Houghton Mifflin Company. All rights reserved.