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# CHE-125 Ch.2

SI Length uses: meter (m)
Mass: kilogram (kg)
Temp: Kelvin (K)
Time: seconds (s)
Amount: Mole (mol)
Volume: Liter (L)
mega: (M) 10^6 =1,000,000
kilo: (k) 10^3 = 1,000
deci: (d) 10^-1 =1/10 .1
centi: (c) 10^-2 =1/100 .01
mili: (m) 10^-3= 1/1,000 .001
micro (mc) or greek symbol 10^-6= 1/1,000,000 .000 001
Mass amount of matter in an object. does NOT equal weight which is gravitaitonal pull.
Volume amount of space occupied by matter (m^3). measured by liter (L or l) or mililiter(ml).
Temp meausre of heat intensity in a substance or system
Heat Form of energy, its associated with motion of atoms/molecules heat = (mass)(specific heat)(delta Temp.) Units: calories (cal) or Joule (J)
Specific heat heat needed to change the temp of 1g of a substance by 1 C. Units: cal/g(C) or J/g(C) 1cal=4.18400 J
Density ratio of mass to volume for a substance D=M/V
Specific Gravity D of substance/ D of Water
Created by: kaelin.steele