CHM031 M1 SA W2 & W4

Question 1

used to represent very large numbers

Answer 1

Scientific Notation

Question 2

True or False: measurement does not always require a unit

Answer 2

False

Question 3

expressed by numerical value & unit of measurement (quantitative observation)

Answer 3

Measurement and Uncertainty

Question 4

portion is made with an estimation two digits are certain but the last is never an exact value (best estimate)

Answer 4

Measurement and Estimation

Question 5

digits in a measurement (certain and uncertain) and expressed by a limited number of digits (conveys precision)

Answer 5

Significant Figures

Question 6

Measure of length, mass, & volume (decimal system)

Answer 6

Metric system

Question 7

standard system of measurement of physical quantities

Answer 7

Metric System

Question 8

standard unit of length of metric system; the distance a light travel in a vacuum

Answer 8

Meter

Question 9

how many seconds does a light travel in a vacuum

Answer 9

1/299,792,458 of a sec

Question 10

amount of matter in an object (standard measurement of metric system)

Answer 10

Mass

Question 11

it is measured on a balance and is independent on location

Answer 11

Mass

Question 12

effect of gravity on an object and is measured on a scale; measures force against a spring

Answer 12

Weight

Question 13

How much is the mass of Pt-Ir cylinder standard?

Answer 13

1 kg

Question 14

1 kg is how many in pounds?

Answer 14

2.2015 lbs

Question 15

it is the amount of space occupied by matter and the SI unit is m^3

Answer 15

Volume

Question 16

metric volume is typically used in…?

Answer 16

mL or L

Question 17

the cubic decimeter of water at 4 degrees Celsius

Answer 17

Liter

Question 18

converts one unit of measure to another by using conversion factors

Answer 18

Dimensional Analysis

Question 19

ratio of equivalent quantities

Answer 19

Conversion factor

Question 20

composition of many mixtures

Answer 20

Percent

Question 21

it involves the motion of small particles of matter

Answer 21

Thermal Energy

Question 22

measurement of the intensity of thermal energy of a system

Answer 22

Temperature

Question 23

flow of energy due to a temperature difference; flows from regions of higher to lower temp

Answer 23

Heat

Question 24

range 180 degrees between Freezing and Boiling

Answer 24

Fahrenheit

Question 25

its lowest temperature is absolute zero (-273.15 in degrees Celsius)

Answer 25

Kelvin

Question 26

ratio of the mass of a substance to the volume occupied by that mass

Answer 26

Density

Question 27

H2O FP for C, F, & K

Answer 27

0, 32, 273.15

Question 28

H2O BP for C, F, * K

Answer 28

100, 212, 373.15