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CHE-125 Ch.2
Question | Answer |
---|---|
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 |