chem

Ion

Name

Ion

Name

Hg₂²⁺

Mercury(I)

NCS^- or SCN^-

Thiocyanate

NH₄⁺

Ammonium

CO₃^2-

Carbonate

NO₂^-

Nitrite

HCO₃^-

Hydrogen carbonate or Bicarbonate

NO₃^-

Nitrate

ClO^- or OCl^-

Hypochlorite

SO₃^2-

Sulfite

ClO₂^-

Chlorite

SO₄^2-

Sulfate

ClO₃^-

Chlorate

HSO₄^-

Hydrogen sulfate

ClO₄^-

Perchlorate

OH^-

Hydroxide

C₂H₃O₂^-

Acetate

CN^-

Cyanide

MnO₄^-

Permanganate

PO₄^3-

Phosphate

Cr₂O₇^2-

Dichromate

HPO₄^2-

Hydrogen phosphate

CrO₄^2-

Chromate

H₂PO₄^-

Dihydrogen phosphate

O₂^2-

Peroxide

C₂O₄^2-

Oxalate

S₂O₃^2-

Thiosulfate

Physical Quantity

Name of Unit

Abbreviation

Mass

kilogram

kg

Length

meter

m

Time

second

s

Temperature

kelvin

K

Electric Current

ampere

A

Amount of substance

mole

mol

Luminous intensity

candela

cd

Prefix

Symbol

Meaning

Exponential Notation

mega

M

1,000,000

10⁶

kilo

k

1,000

10³

hecto

h

100

10²

deka

da

10

10¹

BASE

---

1

---

deci

d

0.1

10^-1

centi

c

0.01

10^-2

milli

m

0.001

10^-3

micro

𝜇           (greek letter mu)

0.000001

10^-6

nano

n

0.000000001

10^-9