chapter 2-1chemistry 120 online la tech chapter 2 measurements in chemistry
TRANSCRIPT
![Page 1: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/1.jpg)
Chapter 2-1Chemistry 120 Online LA Tech
Chapter 2
Measurements In Chemistry
![Page 2: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/2.jpg)
Chapter 2-2Chemistry 120 Online LA Tech
© Richard Hamilton Smith/Corbis Outline
Measurements are not exact
→ Measurements can never be exact; there is always
some uncertainty.
![Page 3: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/3.jpg)
Chapter 2-3Chemistry 120 Online LA Tech
Metric system units are becoming increasingly evident on highway signs.
Metric System
![Page 4: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/4.jpg)
Chapter 2-4Chemistry 120 Online LA Tech
¬ Table 2.1
Metric Prefixes
![Page 5: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/5.jpg)
Chapter 2-5Chemistry 120 Online LA Tech
→ Fig. 2.2 Comparisons of the base metric system units of length, mass, and volume with common objects.
Metric System Base Units
E.R. Degginger
![Page 6: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/6.jpg)
Chapter 2-6Chemistry 120 Online LA Tech
Volume Unites (cm3, L and mL)
← 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.
![Page 7: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/7.jpg)
Chapter 2-7Chemistry 120 Online LA Tech
Solution Concentration Units
The use of the concentration unit milligrams per deciliteris common in clinical laboratory reports dealing with the composition of human body fluids.
![Page 8: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/8.jpg)
Chapter 2-8Chemistry 120 Online LA Tech
The scale on a measuring device determines the magnitude of the uncertainty for the recorded measurement.
Uncertainty of Measurements
![Page 9: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/9.jpg)
Chapter 2-9Chemistry 120 Online LA Tech
Significant Figures in Measurements
![Page 10: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/10.jpg)
Chapter 2-10Chemistry 120 Online LA Tech
The digital readout on an electronic calculator usually shows more digits than are needed.
Rounding off from Calculator Answer
![Page 11: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/11.jpg)
Chapter 2-11Chemistry 120 Online LA Tech
Unit Conversions
It is experimentally determined that 1 inch equals 2.54 cm, or 1 cm equals 0.394 inch
![Page 12: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/12.jpg)
Chapter 2-12Chemistry 120 Online LA Tech
Unit Conversion Factors
← Table 2.2
![Page 13: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/13.jpg)
Chapter 2-13Chemistry 120 Online LA Tech
Common Conversion Factors
®
![Page 14: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/14.jpg)
Chapter 2-14Chemistry 120 Online LA Tech
Densities and Masses
Both of these items have a mass of 23 grams, but they have very different volumes; therefore, their densities are different as well.
![Page 15: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/15.jpg)
Chapter 2-15Chemistry 120 Online LA Tech
Properties of Gases, Liquids and Solids
→ Table 2.3
![Page 16: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/16.jpg)
Chapter 2-16Chemistry 120 Online LA Tech
Why the Coin floats on Mercury?
← Fig. 2.9
The penny is less dense than the mercury it floats on.
![Page 17: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/17.jpg)
Chapter 2-17Chemistry 120 Online LA Tech
Measurements of Body Density
![Page 18: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/18.jpg)
Chapter 2-18Chemistry 120 Online LA Tech
Specific Heat of Substances
→ Table 2.4
![Page 19: Chapter 2-1Chemistry 120 Online LA Tech Chapter 2 Measurements In Chemistry](https://reader036.vdocuments.us/reader036/viewer/2022062516/56649dbf5503460f94ab3ea6/html5/thumbnails/19.jpg)
Chapter 2-19Chemistry 120 Online LA Tech
Temperature Scales
→ Fig 2.10 The relationships among the Celsius, Kelvin, and Fahrenheit temperature scales are determined by the degree sizes and the reference point values.