Flashcards in R 1.1-1.6 Deck (19):

1

## significant figures

### certain digits and first uncertain digit (estimated number), the convention of significant figures automatically indicates something about the uncertainty in a measurement, uncertainty in the last number usually assumed to be + over - unless indicated

2

## rules for counting significant figures

### 1. non zeros integers 2. zeros 3. exact numbers

3

## non zero integers

### always count as significant figures

4

## temperatures

### three systems: Celsius, kelvin, Fahrenheit

5

## celcisu

### physical scienes

6

## kelvin

### physical scienies

7

## fahreneheit

### engineering sciens

8

## celcisu and kelvin

### different is zero points, same: size of temperature unit (the degree)

9

## conversion between Celsius and kelvin

###
k = c + 273.15

c = k - 273.15

when converting: consider two adjustments (one for degree, one for zero), account for difference in degree size

10

## density

### property of matter that is often used by chemists as an identification tag, mass of substance divided by volume, can be determined easily by weighing an accurately known volume of liquid, identification of substances, used to determine amount of anti-freeze

11

## deci

### 10 to the -1

12

## exa

### 10 to the 18

13

## peta

### 10 to the 15

13

## heco

### 10 the 3

15

## atto

### 10 to the -18

16

## pico

### 10 to the -12

17

## deka

### 10 to the 1

18

## femto

### 10 to the -15

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