Depends what particular property of matter you need to measure.
Mass . . . use the "kilogram"
Length . . . use the "meter"
Temperature . . . use the Kelvin or the degree Celsius
Speed . . . use the Meter per Second
Weight . . . use the Newton
etc.
Mass
The SI unit for measuring temperature is Kelvinkelvin kelvin
It depends what you're measuring. For example, if you're measuring distance, the SI unit used is the metre.
SI units of pain
Seconds
Mass
The SI unit for measuring temperature is Kelvinkelvin kelvin
For measuring WHAT?
The SI unit for measuring weight (the force due to gravity) is the newton.The SI unit for measuring mass is the kilogram.
SI unit of length is "meter".
It depends what you're measuring. For example, if you're measuring distance, the SI unit used is the metre.
SI is a unit of measuring.
SI units of pain
The joule.
The liter
metres
second