Reading Log Chapter 2 chemistry - Jacob Zipperstein Reading...

Jacob Zipperstein
Reading Log Chapter 2
Data Analysis
Section: 2.1
SI Units = Systeme Internationale d’Unites or Metric System
Table 2-1:
Quantity Base Units
Time Seconds (s)
Length Meter (m)
Mass Kilogram (kg)
Temperature Kelvin (K)
Amount of a
substance
Mole (mol)
Electric current Ampere (A)
Luminous intensity Candela (cd)
Table 2-2:
G = giga = 10^9
M = mega = 10^6
k = kilo = 10^3
d = deci = 10^-1
c = centi = 10^-2
m = milli = 10^-3
u = micro = 10^-6
n = nano = 10^-9
p = pico =10^-12
Derived Units = Come from combining base units
Examples – volume and density
Volume = space occupied by an object. Units – cubic meter or cubic centimeter
Liter = one cubic decimeter
Density = mass/unit volume – ratio compares mass to an object’s volume
Example – g/cubic centimeter
Temperature – measures (approximately) how hot or cold an object is
Kelvin – Freezes at 273k. Boils at 373k. + 273 to Celcius = kelvin

Jacob Zipperstein
Section 2.2
Scientific Notation –
-epxresses number as multiple of 2 factors
- between 1 and 10
- Exponents must be same when + or –