ch 2: measurements and calculations

system

the amount of matter in a space that has been chosen to study

quntative

size or amount expressed in numbers/graphs

qualtitive

words/descriptions

abbreviation for kelvin(temp.)

K

abbreviation for ampere(electric current)

A

list the SL base units mega-nano + their meaning and abbreviation

mega 1,000,000 M, kilo 1,000 k, hecto 100 k, deka 10 da, meter(m)/liter(L)/grams(g) 1, deci 1/10 d, centi 1/100 c, mili 1/1,000 m, micro 1/1,000,000 μ, nano 1/1,000,000,000 n

derived units

combinations of SI base units

what is the SI base unit for mass

kilogram

what is the SI base unit for time

second

what is the SI base unit for length

meter

what is the SI base unit for electric current (I, i)

ampere

what is the SI base unit for temperature (T)

kelvin

what is the SI base unit for amount

mol

an object so far out in space that gravity does not act on it has

mass but no weight

the liter is a SI base unit of

volume

a milimeter has the same volume as

cubic centimeter

when adding and subtracting fractions you should

round to the nearest decimal and add a .0 at the end

perentage error equation

((value you got-the right value)/the right value) • 100