Create A4 worksheets to go from name to formula and from formula to name: binary compounds, hydroxides, oxoacids and oxosalts, with the IUPAC 2005 nomenclatures and a full answer key.
✓ Grades 9-10✓ 9 compound types✓ Stoichiometric, Stock and traditional✓ Answer key with every name
🪄 Wizard: Add Compounds to the Worksheet
💡 Learning goal: Oxygen with metals (Fe₂O₃) and with non-metals (CO₂, SO₃); at level 3, also the oxygen halides (O₅Cl₂). Grade 9. Level 1: Basic: Metals with a single oxidation state (Na, K, Ca, Mg, Al, Zn, Ag), CO and CO₂ and the most common oxoacids (carbonic, nitric, nitrous, sulfuric, sulfurous, phosphoric): practises swapping the oxidation states.
📋 Compounds on the Worksheet
✨ No compounds yet. Choose the options above and click “Add to Worksheet”.
⚙️Format & Print OptionsStoichiometric, Stock, Traditional, Hydrogen name • Student worksheet and answer key
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📄
📚 Teaching Guide: Naming Inorganic Compounds
Writing formulas means going from the name of a compound to its formula; naming is the way back. This free inorganic nomenclature worksheet generator builds every formula from the elements and their oxidation states and gives all its names following the IUPAC 2005 recommendations, with a full answer key. To revise the symbols and names of the elements first, use the periodic table worksheet generator; you will find more resources in Natural Sciences.
🔥 Binary compounds
Oxides, peroxides, hydrides, hydracids and binary salts: swap the oxidation states and simplify the subscripts, except the O₂ group of peroxides.
⚗️ Oxoacids and oxosalts
Hypo-…-ous, -ous, -ic and per-…-ic for the acids; -ite and -ate for the salts. With the traditional name, the hydrogen name and the stoichiometric name of the salts.
🔢 Oxidation states
Level 1 with metals that have one oxidation state, level 2 with Fe, Cu, Sn, Pb… (Stock Roman numerals) and level 3 with the whole school table.
🔄 Name → formula and formula → name
Choose whether students write the formula, name the compound or fill in what is missing. You can mix them on the same worksheet.
📏 IUPAC 2005
The IUPAC element order (O₅Cl₂, NH₃, H₂S), multiplying prefixes, “mono” only in monoxide and the oxidation state only when the element has more than one.
✅ Full answer key
Every compound with its formula and all its names. What the question gave is printed in black and what had to be answered in colour.
❓ Frequently Asked Questions about Inorganic Nomenclature
Which recommendations does it follow?
The IUPAC 2005 recommendations (Red Book): simplified formulas (except peroxides), stoichiometric names with multiplying prefixes, Stock names with the oxidation state in Roman numerals when the element has more than one, and the accepted traditional names of oxoacids and oxosalts.
Why does chlorine come after oxygen in O₅Cl₂?
Since 2005 IUPAC orders the elements with a sequence in which the halogens come after oxygen, so the formula is O₅Cl₂ and the name pentaoxygen dichloride. Many books still write Cl₂O₅ (dichlorine pentoxide); these compounds only appear at level 3.
When is the prefix mono- used?
Only in “monoxide”, when the other element has several oxidation states: carbon monoxide, iron monoxide. Otherwise it is left out: calcium oxide, sodium chloride.
Can I leave out a nomenclature?
Yes. In the format options you can untick the stoichiometric, Stock, traditional or hydrogen names. The worksheet and the answer key only ask for and show the ones left ticked.
Which oxidation states does it use?
The usual school table: +1 for the alkali metals and silver, +2 for the alkaline earth metals, zinc and cadmium, +3 for aluminium, +1/+2 for copper, +2/+3 for iron, cobalt and nickel, +2/+4 for tin, lead and platinum, +1/+3 for gold, and the positive and negative oxidation states of the non-metals. Mercury only appears as mercury(II).
Is any student data sent to a server?
No. Every worksheet is generated in your browser and no student data is stored.
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