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Page 1: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Measurement

Page 2: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

The SI System of Measurement

The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's most widely used system of measurement, used in both everyday commerce and science.

Page 3: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Units of Measurement

length = meters (m)

mass = kilograms (kg)

liquid volume = liters (L)

solid volume = cubic centimeters (cm3)

temperature = Kelvin (K)

time = seconds (s)

Page 4: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Reporting Measurements

Report what is known with certainty

Add ONE digit of uncertainty (estimation)

Davis, Metcalfe, Williams, Castka, Modern Chemistry, 1999, page 46

Page 5: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Davis, Metcalfe, Williams, Castka, Modern Chemistry, 1999, page 46

Page 6: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Measuring Length

Zumdahl, Zumdahl, DeCoste, World of Chemistry 2002, page 122

Page 7: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Practice Measuring

Timberlake, Chemistry 7th Edition, page 7

cm0 1 2 3 4 5

cm0 1 2 3 4 5

Page 8: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Practice Measuring

4.5 cm

Timberlake, Chemistry 7th Edition, page 7

cm0 1 2 3 4 5

cm0 1 2 3 4 5

Page 9: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Practice Measuring

4.5 cm

4.55 cm

Timberlake, Chemistry 7th Edition, page 7

cm0 1 2 3 4 5

cm0 1 2 3 4 5

Page 10: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Christopherson Scales

Made in Normal, Illinois USA

Measuring Mass

1 kg = 2.20 lb

1 kg(1000 g) 1 lb 1 lb

0.20 lb

Page 11: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Reading a Triple Beam Balance

Page 12: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Reading a Triple Beam Balance

272.09 grams

Page 13: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Measuring Liquid Volume

Graduatedcylinder

Syringe Volumetric flaskBuret Pipet

Page 14: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

100 mL Graduated Cylinder

Zumdahl, Zumdahl, DeCoste, World of Chemistry 2002, page 119

Page 15: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Reading a Meniscus

10

8

6

line of sight too high

reading too low

reading too high

line of sight too low

proper line of sightreading correct

graduatedcylinder

10 mL

Page 16: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

20

10

15 mL ?

15.0 mL

Page 17: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Measuring Solid Volume

Page 18: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Measuring Solid Volume

V = L x W x H

Page 19: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Measuring Solid Volume

V = L x W x H

V = 7cm x 4cm x 3cm

Page 20: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Measuring Solid Volume

V = L x W x H

V = 7cm x 4cm x 3cm

V = 84 cm3

Page 21: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

Water Displacement

Page 22: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

How to Read a Thermometer(Celcius)

10

5

0

4.0 oC

10

5

0

8.5 oC

100

50

0

65 oC

Page 23: Measurement The SI System of Measurement The International System of Units (abbreviated SI) is the modern form of the metric system and is the world's

0oC

10oC

20oC

30oC

40oC

50oC

60oC

0oC

1oC

2oC

3oC

4oC

5oC

6oC

0oC

5oC

10oC

15oC

20oC

25oC

0oC

20oC

40oC

60oC

80oC

100oC

0oC

20oC

40oC

60oC

80oC

100oC

Record the Temperature(Celcius)

A B C D E30.0oC 3.0oC 19.0oC 48.0oC 60.0oC


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