SI Table & Prefixes for SI Units | Chemistry Notes Info - Your Chemistry Tutor provide notes for Classes, BSc, MSc, Chemistry Test

SI Table & Prefixes for SI Units

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
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
10-6
Micro
m
10-3
Milli
m
10-2
Centi
c
10-1
Deci
d
10
Deca
da
102
Hecto
h
103
Kilo
k
106
Mega
M
109
Giga
G
1012
Tera
T
1015
Peta
P
1018
Exa
E
1021
Zeta
Z
1024
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 cm3 = 1dm3
Density:- Amount of mass per unit volume.
=>  SI unit :- Kgm-3
Temperature:- It is the measurement of cooling or warming.
Three scales
=>  0C (Degree Celsius)
=>  0F degree Fahrenheit)
=>  k (Kelvin)
=>  freezing point of water = 0 0C
=>  Boiling point of water = 100 0C
Relationship
CHEMISTRY
Or,
k = 0C + 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.
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