Chemistry 1.1

kilo-

one thousand (1000)

centi-

one hundredth (0.01)

milli-

one thousandth (0.001)

mega-

one million (10⁶ )

micro-

one millionth (10⁻⁶)

nano

one billionth (10⁻⁹)

SI

International System of Units

SI unit of length

meter

SI unit of mass

kilogram

SI unit of volume

liter

SI unit of time

second

SI unit of temperature

Kelvin

dimensional analysis

method of problem solving that focuses on the units used to describe matter

conversion factor

ratio of equivalent values used to express the same quantity in different units

derived unit

a unit that is defined by a combination of base units

scientific notation

expresses a number as a number between 1 and 10 and ten raised to a power, or exponent

positive exponent

used when a number is more than one

negative exponent

used when a number is less than one

accuracy

refers to how close a measured value is to an accepted value

precision

refers to how close a series of measurements are to one another