Basic chemistry help for students and teachers

 

Interactive Chemistry Worksheets for Students

 

Periodic table

Naming compounds

Basic formula

Simple compounds

Ionic compounds 1

Ionic compounds 2

Chemical suffixes

Old chemical names

Hydrocarbons - Alkanes

Alkanes, alkenes & alkynes

Alkanols to alkanoic acids

 

Common compounds

Common formula quiz

Acids, bases and salts

Covalent compounds

Printable worksheets
 

 

 

The chemical suffix or end part of a chemical name needs careful attention.

There is a big difference between the "ide", "ate" and "ite" suffixes.

 

1. As a general rule an "ide" suffix indicates an element. eg. sulfide S2-, nitride N3- and phosphide P3-

The exceptions are hydroxide OH- and cyanide CN-

 

2. "ates" and "ites" always contain oxygen. eg. nitrate NO3- and nitrite NO2-

 

3. "ates" always have a higher number of oxygen atoms the corresponding "ites". eg. sulfate SO42- and sulfite SO32-

 

Chemical Formula Table

 
A
B
C
D
E
1.
Na2S
sodium sulfide
K2S
potassium sulfide
MgS
magnesium sulfide
CaS
calcium sulfide
Al2S3
aluminum sulfide
2.
NaSO4
sodium sulfate
K2SO4
potassium sulfate
MgSO4
magnesium sulfate
CaSO4
calcium sulfate
Al2SO4
aluminum sulfate
3.
NaSO3
sodium sulfite
KSO3
potassium sulfite
MgSO3
magnesium sulfite
CaSO3
calcium sulfite
AlSO3
aluminium sulfite
4.
Na3N
sodium nitride
K3N
potassium nitride
Mg3N2
magnesium nitride
Ca3N2
calcium nitride
AlN
aluminum nitride
5.
NaNO3
sodium nitrate
KNO3
potassium nitrate
Mg(NO3)2
magnesium nitrate
Ca(NO3)2
calcium nitrate
Al(NO3)3
aluminum nitrate
6.
NaNO2
sodium nitrite
KNO2
potassium nitrite
Mg(NO2)2
magnesium nitrite
Ca(NO2)2
calcium nitrite
Al(NO2)3
aluminium nitrite
7.
Na3P
sodium phosphide
K3P
potassium phosphide
Mg3P2
magnesium phosphide
Ca3P2
calcium phosphide
AlP
aluminum phosphide
8.
Na3PO4
sodium phosphate
K3PO4
potassium phosphate
Mg3(PO4)2
magnesium phosphate
Ca3(PO4)2
calcium phosphate
AlPO4
aluminum phosphate