Ch. 2 Data Analysis

Question 1

Second

Answer 1

The microwave frequency given off by a cesium - 133 atom

Question 2

Meter

Answer 2

The distance that light travels through vacuum in 1/299 792 458 second

Question 3

Kilogram

Answer 3

A platinum - iridium cylinder that is stored at constant temperature and humidity

Question 4

Cubic meter

Answer 4

A cube whose sides all measure exactly one meter

Question 5

Centi

Answer 5

C, 1/100

Question 6

Kilo

Answer 6

K, 1000

Question 7

Milli

Answer 7

M, 1/1000

Question 8

1 kg = g?

Answer 8

1000 g = 1kg

Question 9

1ml = L?

Answer 9

1ML = 1,000,000L

Question 10

1M = c ?

Answer 10

1m = 1,000,000c

Question 11

Base unit

Answer 11

Is a defined unit

Question 12

Derived unit

Answer 12

Is defined by a combo of units

Question 13

Density

Answer 13

A ratio that compares the mass of an object

Question 14

3 part process for problem solving

Answer 14

Analyze problem, solve, evaluate answer

Question 15

How are degrees Celsius converted to kelvins ?

Answer 15

You add 273

Question 16

Scientific notation ex:

Answer 16

1. 61 X 10^2

2. 8 X 10^ -8

Question 17

Conversion factor

Answer 17

A ratio of equivalent values used to describe the same quantity in different units; is always equal to 1

Question 18

Dimensional analysis

Answer 18

A problem solving method that focuses on the units that are used to describe matter

Question 19

The difference between an accepted value and an experimental value is

Answer 19

Error

Question 20

The ratio of an error to an accepted value is

Answer 20

Percent error

Question 21

When you calculate percent error you ignore the

Answer 21

Experimental values

Question 22

If two measurements are very close to each other then they are

Answer 22

A balance that is not set to 0

Question 23

Significant figures

Answer 23

The digits that are reported in an answer

Question 24

9.66 has what ?

Answer 24

Two known figures and 1 estimated figure

Question 25

Non - zero numbers

Answer 25

Are always significant

Question 26

Zero place holders

Answer 26

Are not significant

Question 27

Counting numbers

Answer 27

Have an infinite number of significant figures

Question 28

Scientific notation you:

Answer 28

You remove the place holder zeros