Practice Nomenclature in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

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Quick Recap

The systematic method for naming chemical compounds according to IUPAC rules, ensuring that every compound has exactly one correct name and every name points to exactly one compound.

Chemistry has a naming system so that every compound gets exactly one name and every name points to exactly one compound — like a universal address system.

Showing a random 20 of 50 problems.

Example 1

medium
Name Cu2OCu_2O.

Example 2

easy
Name HF(aq)\text{HF}(aq).

Example 3

challenge
Give the IUPAC name for H3PO3\text{H}_3\text{PO}_3, where the anion PO33−\text{PO}_3^{3-} ends in '-ite'.

Example 4

easy
Name K2SK_2S.

Example 5

medium
Name KMnO4\text{KMnO}_4.

Example 6

medium
Name Pb(NO3)2Pb(NO_3)_2 with the Roman numeral.

Example 7

medium
Name Sn(NO3)4\text{Sn(NO}_3\text{)}_4.

Example 8

easy
Name the compound AgCl\text{AgCl}.

Example 9

hard
Write the formula for iron(II) phosphate.

Example 10

hard
Write the formula for ammonium phosphate.

Example 11

easy
Name the compound NaCl.

Example 12

medium
Name the acid H2SO3H_2SO_3.

Example 13

medium
Name ZnCO3\text{ZnCO}_3.

Example 14

medium
Distinguish: SO42−SO_4^{2-} vs SO32−SO_3^{2-} in naming.

Example 15

easy
Name the compound Na2SO4Na_2SO_4.

Example 16

challenge
Give the formula from the name iron(III) sulfate.

Example 17

medium
Name HClO4\text{HClO}_4.

Example 18

easy
Name the compound MgOMgO.

Example 19

medium
Name HNO3\text{HNO}_3.

Example 20

hard
Name Hg2Cl2\text{Hg}_2\text{Cl}_2 (note: mercury(I) is a dimer Hg22+\text{Hg}_2^{2+}).
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