b. unit 2 data доклад на Общие темы

Доклад раскрывает тему "b. unit 2 data".
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SI Units: Le Systeme Internationale
SI Units: Le Systeme Internationale
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Информация вложена в изображении слайда
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Информация вложена в изображении слайда
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Информация вложена в изображении слайда
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13.5 g of aluminum has a volume of 5 mL. Density?
13.5 g of aluminum has a volume of 5 mL. Density?
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What is the mass of 2 mL of aluminum?
d =m/v 
v = 2 mL
Density = 2.7 g/mL
Must rearrange formula…
What is the mass of 2 mL of aluminum? d =m/v v = 2 mL Density = 2.7 g/mL Must rearrange formula…
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Kelvin (our second formula)
Temp scale that cannot go below zero
Kelvin (our second formula) Temp scale that cannot go below zero
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Scientific Notation: for big and small numbers
10,000. = 1 X 104
Scientific Notation: for big and small numbers 10,000. = 1 X 104
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Scientific Notation on your calculators: Use your EE button
(or be sure to use parentheses)
To Enter 6.02 x 1023
type 6.02 EE 23
What is (2 x 101)(1 x 101)?
200 or 2 x 102; your calc. may say 2E2
Scientific Notation on your calculators: Use your EE button (or be sure to use parentheses) To Enter 6.02 x 1023 type 6.02 EE 23 What is (2 x 101)(1 x 101)? 200 or 2 x 102; your calc. may say 2E2
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-7 x 10-9
-7 x 10-9
5.3505 x 103
5.84 x 10-13
2.904 x 1023
-7 x 10-9 -7 x 10-9 5.3505 x 103 5.84 x 10-13 2.904 x 1023
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5. Unit Conversions
A Sample Problem
You have $7.25 in your pocket in quarters.  How many quarters do you have?
5. Unit Conversions A Sample Problem You have $7.25 in your pocket in quarters. How many quarters do you have?
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Unit Conversions
Another Sample Problem
Convert 65 miles/hour to meters per second
Unit Conversions Another Sample Problem Convert 65 miles/hour to meters per second
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6. Significant Figures (L1 only):
which numbers matter.
What is 3/7….
1. When measuring
include the known digits plus one estimated digit.
6. Significant Figures (L1 only): which numbers matter. What is 3/7…. 1. When measuring include the known digits plus one estimated digit.
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Counting Significant Figures
Guess which zero’s matter (L1 only)
Counting Significant Figures Guess which zero’s matter (L1 only)
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Learning Check 
A. Which 2 answers contain 3 significant  figures?
1)   0.4760	    2)  0.00476	  3)  4760     	
B. All the zeros are significant in 
	1)   0.00307 	    2)  25.300	  3)  2.050 x 103
C. 534,675 rounded to 3 significant  figures is
 	1)  535   	   2)  535,000    	  3) 5.35 x 105
Learning Check A. Which 2 answers contain 3 significant figures? 1) 0.4760 2) 0.00476 3) 4760 B. All the zeros are significant in 1) 0.00307 2) 25.300 3) 2.050 x 103 C. 534,675 rounded to 3 significant figures is 1) 535 2) 535,000 3) 5.35 x 105
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7. Percent Error
7. Percent Error