SI Table
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

I_{v}

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

10^{6}

Micro

m

10^{3}

Milli

m

10^{2}

Centi

c

10^{1}

Deci

d

10

Deca

da

10^{2}

Hecto

h

10^{3}

Kilo

k

10^{6}

Mega

M

10^{9}

Giga

G

10^{12}

Tera

T

10^{15}

Peta

P

10^{18}

Exa

E

10^{21}

Zeta

Z

10^{24}

yotto

Y

Mass: amount of matter in object
=> 1 kg = 1000 gram
Weight: force on the object by gravity.
Volume: (length)^{3}
=> 1 L = 1000 ml, 1000 cm^{3} = 1dm^{3}
Density: Amount of mass per unit volume.
=> SI unit : Kgm^{3}
Temperature: It is the measurement of cooling or warming.
Three scales
=> ^{0}C (Degree Celsius)
=> ^{0}F degree Fahrenheit)
=> k (Kelvin)
=> freezing point of water = 0^{ 0}C
=> Boiling point of water = 100 ^{0}C
Relationship
Or,
k = ^{0}C + 273.15
Precision: Closeness of various measurement for same quantity.
Accuracy: It is the agreement of a particular value to the true value of the result.
Significant figure: The meaningful digits which are known with certainty.
SI Units – Basic Chemistry in Hindi Part 1
In this video we learn about SI System of units. We learn about 7 basic SI units, derived units, international system of units. In this video of Basic chemistry we get all information about SI units Which are used in physic and chemistry science experiments.
Watch this video at Youtube Link : https://youtu.be/eR6SCVLrVPE
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