7 Basic Physical Quantity and their SI Units

7 Basic Physical Quantity and their SI Units Chemistry Podcast
SI System

7 SI Base Units

Base physical quantity

Symbol for quantity

SI units name

SI units symbol

Length

l

Metre

m

Mass

m

Kilogram

Kg

Time

t

Second

s

Current

I

Ampere

A

Temperature

T

Kelvin

K

Amount of substance

n

Mole

Mol

Luminous intensity

Iv

candela

Cd

Prefixes for SI Units

Multiple

Prefix

Symbol

10-24

Yocto

y

10-21

Zepto

z

10-18

Atto

a

10-15

Femto

f

10-12

Pico

p

10-9

Nano

n