Ionic Compound Naming Flashcards: Names, Formulas & Charge Balance
Practice ionic compound naming with 56 English flashcards on neutral formulas, Roman numerals, polyatomic-ion parentheses, and common errors.
Bu deste hakkında
Practice ionic compound names and neutral formulas with 56 English flashcards. This focused deck is for high-school and introductory-college learners who know basic ions and want to apply charge balance consistently.
The cards practice names to formulas, selected formulas back to names, metal-charge inference, one polyatomic-group count, and short repairs of incorrect formulas or missing naming information. Ion charges and polyatomic-ion names are supplied where the target is applying a rule. This is compound-naming practice rather than a table of isolated ions; use the polyatomic ion flashcards for that prerequisite.
The sequence begins with neutrality, cation-first order, subscripts, and the smallest whole-number ratio of intact ions. Fixed-charge binary salts come next, followed by iron, copper, and tin Stock names. Polyatomic groups and ammonium then lead into mixed formula, naming, and error-repair prompts. Selected reverse directions and closely related variants are separated. Every card carries the ionic-naming tag; the review scheduler handles longer-term spacing.
Names follow the usual introductory convention: fixed-charge cations without Roman numerals, variable-charge monatomic metals with Stock Roman numerals, and familiar polyatomic-ion names. Aluminum and aluminium are accepted spelling variants; sodium hydrogen carbonate and sodium bicarbonate are both accepted. This convention does not exhaust all valid systematic names. Arbitrary name-to-example prompts and exhaustive reversals are omitted because they add ambiguity or repetition. Covalent naming, acids, hydrates, organic compounds, coordination complexes, peroxide and mercury(I) special cases, reactions, and solubility are outside this deck. No full-course or examination alignment is claimed.
The questions, explanations, order, and metadata were written independently with AI assistance. Naming and ion facts were checked against Purdue University’s ionic-naming rules and ion reference tables. No competitor cards, source exercise wording, examination questions, or source diagrams were copied. Reference works retain their own rights, and chemical facts are not claimed as proprietary. Original material, including the AI-generated decorative charge-symbol cover, is dedicated under CC0 1.0 to the extent applicable rights exist. This is independent study material without institutional endorsement.
Bu destedeki kartlar
Kart 1
Soru
In a neutral ionic formula unit, what must the total ionic charge be?
Cevap
Zero. The positive and negative charges must cancel.
Kart 2
Soru
When naming a simple ionic compound, which ion is named first?
Cevap
The cation, followed by the anion.
Kart 3
Soru
Write the formula for lithium fluoride using Li⁺ and F⁻.
Cevap
LiF. One ion of each kind gives +1 − 1 = 0.
Kart 4
Soru
In CaCl₂, what does the subscript 2 count?
Cevap
Two chloride ions for each calcium ion. It does not mean that each chloride ion has a charge of −2.
Kart 5
Soru
Name MgO using the usual fixed-charge ionic naming convention.
Cevap
Magnesium oxide. The ions are Mg²⁺ and O²⁻.
Kart 6
Soru
What is the smallest neutral ratio of Al³⁺ ions to O²⁻ ions?
Cevap
Two Al³⁺ ions to three O²⁻ ions: +6 and −6 cancel.
Kart 7
Soru
Write the formula for magnesium bromide using Mg²⁺ and Br⁻.
Cevap
MgBr₂. Two bromide ions balance one magnesium ion.
Kart 8
Soru
Name Na₂S using the usual fixed-charge ionic naming convention.
Cevap
Sodium sulfide. The sulfur anion is called sulfide.
Kart 9
Soru
Write the simplest formula for calcium oxide using Ca²⁺ and O²⁻.
Cevap
CaO. Equal and opposite charges give a 1:1 ion ratio.
Kart 10
Soru
Write the formula for aluminum nitride using Al³⁺ and N³⁻.
Cevap
AlN. One ion of each kind is neutral. Aluminium nitride is the same compound, with the British spelling.
Kart 11
Soru
Name Mg₃N₂ using the usual fixed-charge ionic naming convention.
Cevap
Magnesium nitride. Three Mg²⁺ ions balance two N³⁻ ions.
Kart 12
Soru
Write the formula for lithium oxide using Li⁺ and O²⁻.
Cevap
Li₂O. Two lithium ions balance one oxide ion.
Kart 13
Soru
Name CaF₂ using the usual fixed-charge ionic naming convention.
Cevap
Calcium fluoride. This convention uses the ion names without a di- prefix for the two fluoride ions.
Kart 14
Soru
A student writes Mg₂O₂ for magnesium oxide, using Mg²⁺ and O²⁻. What is the simplest formula?
Cevap
MgO. The 2:2 ion ratio is neutral but reduces to 1:1.
Kart 15
Soru
Name Al₂S₃ using the usual fixed-charge ionic naming convention.
Cevap
Aluminum sulfide (also spelled aluminium sulfide). Two Al³⁺ ions balance three S²⁻ ions.
Kart 16
Soru
Write the formula for sodium phosphide using Na⁺ and P³⁻.
Cevap
Na₃P. Three sodium ions balance one phosphide ion.
Kart 17
Soru
Name LiF using the usual fixed-charge ionic naming convention.
Cevap
Lithium fluoride. Name the lithium cation first and the fluoride anion second.
Kart 18
Soru
Write the formula for magnesium oxide using Mg²⁺ and O²⁻.
Cevap
MgO. The smallest neutral ratio is one magnesium ion to one oxide ion.
Kart 19
Soru
In the Stock name iron(III) chloride, what does III specify?
Cevap
A +3 charge on each iron ion. For this monatomic ion, its charge equals its oxidation state; III is not an atom count.
Kart 20
Soru
Name FeCl₂ using Stock nomenclature. Chloride is Cl⁻.
Cevap
Iron(II) chloride. Two chloride ions total −2, so the iron ion is Fe²⁺.
Kart 21
Soru
What is the charge on each copper ion in Cu₂O, taking oxide as O²⁻?
Cevap
+1. The two copper ions together must supply +2, so each is Cu⁺.
Kart 22
Soru
Write the formula for tin(IV) oxide, using oxide O²⁻.
Cevap
SnO₂. One Sn⁴⁺ ion balances two oxide ions; reduce a crossed 2:4 ratio to 1:2.
Kart 23
Soru
Name Fe₂O₃ using Stock nomenclature. Oxide is O²⁻.
Cevap
Iron(III) oxide. Three oxide ions total −6; divided between two iron ions, that requires Fe³⁺.
Kart 24
Soru
Write the formula for copper(II) bromide, using bromide Br⁻.
Cevap
CuBr₂. One Cu²⁺ ion needs two bromide ions.
Kart 25
Soru
Name SnCl₂ using Stock nomenclature. Chloride is Cl⁻.
Cevap
Tin(II) chloride. Two Cl⁻ ions require one Sn²⁺ ion.
Kart 26
Soru
Write the formula for iron(II) chloride, using chloride Cl⁻.
Cevap
FeCl₂. One Fe²⁺ ion balances two chloride ions.
Kart 27
Soru
Name CuO using Stock nomenclature. Oxide is O²⁻.
Cevap
Copper(II) oxide. The 1:1 ratio requires Cu²⁺ to balance O²⁻.
Kart 28
Soru
Write the formula for iron(III) sulfide, using sulfide S²⁻.
Cevap
Fe₂S₃. Two Fe³⁺ ions supply +6 and three sulfide ions supply −6.
Kart 29
Soru
Why is the name copper chloride insufficient to choose a single formula in introductory Stock nomenclature?
Cevap
It omits the copper oxidation state. Copper(I) chloride is CuCl; copper(II) chloride is CuCl₂.
Kart 30
Soru
Name SnO₂ using Stock nomenclature. Oxide is O²⁻.
Cevap
Tin(IV) oxide. Two oxide ions total −4, so the tin ion is Sn⁴⁺.
Kart 31
Soru
A student labels Fe₂O₃ as iron(II) oxide. Keeping the name iron(II) oxide, what formula should replace it?
Cevap
FeO. Fe²⁺ and O²⁻ balance in a 1:1 ratio; Fe₂O₃ instead corresponds to iron(III) oxide.
Kart 32
Soru
Name CaCl₂ using the usual introductory fixed-charge convention.
Cevap
Calcium chloride. Calcium is treated as Ca²⁺, so this convention omits the Roman numeral. An explicit oxidation-state name is not a different compound.
Kart 33
Soru
Write the formula for sodium nitrate using Na⁺ and NO₃⁻.
Cevap
NaNO₃. One nitrate ion balances one sodium ion; keep the nitrate formula intact.
Kart 34
Soru
Name K₂CO₃. The polyatomic ion CO₃²⁻ is carbonate.
Cevap
Potassium carbonate. Two K⁺ ions balance one carbonate ion.
Kart 35
Soru
When writing a conventional ionic formula, when do you put a polyatomic ion in parentheses?
Cevap
When more than one of that whole ion is needed. Put the count outside the parentheses and leave the ion’s internal subscripts unchanged.
Kart 36
Soru
Write the formula for calcium hydroxide using Ca²⁺ and OH⁻.
Cevap
Ca(OH)₂. Two whole hydroxide ions balance one calcium ion.
Kart 37
Soru
Name NH₄Cl. NH₄⁺ is ammonium.
Cevap
Ammonium chloride. The cation is the whole NH₄⁺ ion, even though it contains no metal.
Kart 38
Soru
Write the formula for aluminum sulfate using Al³⁺ and SO₄²⁻.
Cevap
Al₂(SO₄)₃. Two aluminum ions supply +6 and three intact sulfate ions supply −6.
Kart 39
Soru
Name Mg(NO₃)₂. NO₃⁻ is nitrate.
Cevap
Magnesium nitrate. One Mg²⁺ ion is balanced by two nitrate ions.
Kart 40
Soru
Write the formula for ammonium phosphate using NH₄⁺ and PO₄³⁻.
Cevap
(NH₄)₃PO₄. Three ammonium ions balance one phosphate ion; only ammonium needs parentheses.
Kart 41
Soru
How many whole hydroxide ions are represented in one formula unit of Ba(OH)₂?
Cevap
Two hydroxide ions. The outer subscript multiplies the entire OH group, giving two O atoms and two H atoms.
Kart 42
Soru
Name Fe₂(SO₄)₃ using Stock nomenclature. SO₄²⁻ is sulfate.
Cevap
Iron(III) sulfate. Three sulfate ions total −6, so each of the two iron ions has charge +3.
Kart 43
Soru
Write the formula for calcium nitrate using Ca²⁺ and NO₃⁻.
Cevap
Ca(NO₃)₂. Two intact nitrate ions supply −2 to balance calcium’s +2.
Kart 44
Soru
Name (NH₄)₂SO₄. NH₄⁺ is ammonium and SO₄²⁻ is sulfate.
Cevap
Ammonium sulfate. Two ammonium ions balance one sulfate ion.
Kart 45
Soru
Write the formula for magnesium phosphate using Mg²⁺ and PO₄³⁻.
Cevap
Mg₃(PO₄)₂. Three magnesium ions and two phosphate ions give +6 and −6.
Kart 46
Soru
Name NaHCO₃. HCO₃⁻ is hydrogen carbonate, also called bicarbonate.
Cevap
Sodium hydrogen carbonate, also called sodium bicarbonate. HCO₃⁻ is one intact anion.
Kart 47
Soru
Repair AlOH₃ as the formula for aluminum hydroxide, using Al³⁺ and OH⁻.
Cevap
Al(OH)₃. Three whole hydroxide ions are needed. AlOH₃ fails to multiply the oxygen count along with the hydrogen count.
Kart 48
Soru
Write the formula for ammonium sulfite using NH₄⁺ and SO₃²⁻.
Cevap
(NH₄)₂SO₃. Two ammonium ions balance one sulfite ion; sulfite retains its three oxygen atoms.
Kart 49
Soru
Name Cu(NO₃)₂ using Stock nomenclature. NO₃⁻ is nitrate.
Cevap
Copper(II) nitrate. Two nitrate ions total −2, requiring Cu²⁺.
Kart 50
Soru
Write the formula for iron(III) sulfate, using sulfate SO₄²⁻.
Cevap
Fe₂(SO₄)₃. Two Fe³⁺ ions balance three sulfate ions.
Kart 51
Soru
Repair K(CO₃)₂ as the formula for potassium carbonate, using K⁺ and CO₃²⁻.
Cevap
K₂CO₃. Two potassium ions balance one carbonate ion. A single carbonate group needs no parentheses.
Kart 52
Soru
Can Mg(NO₃)₂ be simplified to MgNO₃ by removing the outer subscript? Use Mg²⁺ and NO₃⁻.
Cevap
No. The ion ratio is already 1:2. Removing the outer 2 would leave total charge +1 instead of zero.
Kart 53
Soru
Name Ca(OH)₂. OH⁻ is hydroxide.
Cevap
Calcium hydroxide. The two hydroxide ions balance one Ca²⁺ ion; the ion name stays hydroxide.
Kart 54
Soru
What is the charge on each copper ion in Cu₃(PO₄)₂, taking phosphate as PO₄³⁻?
Cevap
+2. Two phosphate ions total −6, shared equally among three copper ions as +2 each.
Kart 55
Soru
Write the formula for sodium nitrite using Na⁺ and NO₂⁻.
Cevap
NaNO₂. One nitrite ion balances one sodium ion. Keep NO₂⁻ intact; NO₃⁻ would be nitrate.
Kart 56
Soru
Repair NH₄SO₄ as the formula for ammonium sulfate, using NH₄⁺ and SO₄²⁻.
Cevap
(NH₄)₂SO₄. Two whole ammonium ions are required to balance one sulfate ion; the 2 goes outside the ammonium parentheses.
56 kart
Ionic Compound Naming Flashcards: Names, Formulas & Charge Balance
Nibomo açılır ve hemen çalışmaya başlayabilirsiniz.