Naming and writing formulas for ionic compounds worksheet | Live ... - Free Printable
Educational worksheet: Naming and writing formulas for ionic compounds worksheet | Live .... Download and print for classroom or home learning activities.
JPG
1000×1291
102.7 KB
Free · Personal Use
Quality Assured by Worksheets Library Team
Reviewed for educational accuracy and age-appropriateness
ID: #890654
⭐
Show Answer Key & Explanations
Step-by-step solution for: Naming and writing formulas for ionic compounds worksheet | Live ...
▼
Show Answer Key & Explanations
Step-by-step solution for: Naming and writing formulas for ionic compounds worksheet | Live ...
Here is the complete solution for the worksheet “Names & Formulas for Ionic Compounds”, with explanations for each entry. The left column (1–20) asks for the name of the given formula, and the right column (21–40) asks for the formula of the given name.
---
## ✔ Left Column: Name from Formula (1–20)
- Na⁺ (sodium ion), CO₃²⁻ (carbonate ion). Two Na⁺ balance one CO₃²⁻.
- Na⁺ and OH⁻ (hydroxide ion). Simple 1:1 ratio.
- Mg²⁺ and Br⁻. Two Br⁻ needed to balance Mg²⁺.
- K⁺ and Cl⁻. Classic 1:1 ionic compound.
- Fe²⁺ and Cl⁻. Iron has variable charge; here it’s +2 (since 2 Cl⁻ = -2).
- Fe³⁺ and Cl⁻. Three Cl⁻ ions needed → iron is +3.
- Zn²⁺ and OH⁻. Two OH⁻ balance Zn²⁺. Zinc has fixed +2 charge, so no Roman numeral needed.
- Beryllium is Be²⁺, sulfate is SO₄²⁻ → correct formula is BeSO₄.
- But since the worksheet says “Be₂SO₄”, we assume it’s a typo. If forced to name as written:
→ Beryllium sulfate (but note: this formula is wrong — should be BeSO₄).
> ✔ *Correction: The actual compound is BeSO₄. Naming Be₂SO₄ would imply Be⁺, which doesn’t exist. So answer: Beryllium sulfate (with understanding that formula should be BeSO₄).*
- Cr²⁺ and F⁻. Chromium is transition metal → use Roman numeral.
- Al³⁺ and S²⁻. LCM of charges: 2×3+ = 6+, 3×2- = 6- → balanced.
- Pb²⁺ and O²⁻. Lead has multiple charges → need Roman numeral.
- Li⁺ and PO₄³⁻. Three Li⁺ balance one phosphate.
- Ti⁴⁺ and I⁻. Four I⁻ needed → titanium is +4.
- Co²⁺ and N³⁻. To balance: 3 Co²⁺ = +6, 2 N³⁻ = -6 → so cobalt is +2.
- Mg²⁺ and P³⁻. 3×2+ = 6+, 2×3- = 6- → balanced.
- Ga³⁺ and NO₂⁻ (nitrite ion). Three nitrites needed.
- Ag⁺ and SO₃²⁻. Two Ag⁺ balance one sulfite.
- NH₄⁺ and OH⁻. Classic base.
- Al³⁺ and CN⁻. Three cyanides needed.
- Be²⁺ and CH₃COO⁻ (acetate ion). Two acetates needed.
---
## ✔ Right Column: Formula from Name (21–40)
- Na⁺ and P³⁻ → 3 Na⁺ needed.
- Mg²⁺ and NO₃⁻ → two nitrates needed.
- Pb²⁺ and SO₃²⁻ → 1:1 ratio.
- Ca²⁺ and PO₄³⁻ → LCM: 3 Ca²⁺ = 6+, 2 PO₄³⁻ = 6-.
- NH₄⁺ and SO₄²⁻ → two ammoniums needed.
- Ag⁺ and CN⁻ → 1:1.
- Al³⁺ and S²⁻ → 2 Al³⁺ = 6+, 3 S²⁻ = 6-.
- Be²⁺ and Cl⁻ → two chlorides needed.
- Cu⁺ and As³⁻ → three Cu⁺ balance one As³⁻.
- Fe³⁺ and O²⁻ → 2 Fe³⁺ = 6+, 3 O²⁻ = 6-.
- Ga³⁺ and N³⁻ → 1:1.
- Fe²⁺ and Br⁻ → two bromides needed.
- V⁵⁺ and PO₄³⁻ → LCM of 5 and 3 is 15 → 3 V⁵⁺ = 15+, 5 PO₄³⁻ = 15-.
- Ca²⁺ and O²⁻ → 1:1.
- Mg²⁺ and CH₃COO⁻ → two acetates needed.
- Al³⁺ and SO₄²⁻ → 2 Al³⁺ = 6+, 3 SO₄²⁻ = 6-.
- Cu⁺ and CO₃²⁻ → two Cu⁺ balance one carbonate.
- Ba²⁺ and O²⁻ → 1:1.
- NH₄⁺ and SO₃²⁻ → two ammoniums needed.
- Ag⁺ and Br⁻ → 1:1.
---
## 📝 Final Answer Sheet (Filled)
1) Sodium carbonate
2) Sodium hydroxide
3) Magnesium bromide
4) Potassium chloride
5) Iron(II) chloride
6) Iron(III) chloride
7) Zinc hydroxide
8) Beryllium sulfate *(Note: formula should be BeSO₄)*
9) Chromium(II) fluoride
10) Aluminum sulfide
11) Lead(II) oxide
12) Lithium phosphate
13) Titanium(IV) iodide
14) Cobalt(II) nitride
15) Magnesium phosphide
16) Gallium nitrite
17) Silver sulfite
18) Ammonium hydroxide
19) Aluminum cyanide
20) Beryllium acetate
---
21) Na₃P
22) Mg(NO₃)₂
23) PbSO₃
24) Ca₃(PO₄)₂
25) (NH₄)₂SO₄
26) AgCN
27) Al₂S₃
28) BeCl₂
29) Cu₃As
30) Fe₂O₃
31) GaN
32) FeBr₂
33) V₃(PO₄)₅
34) CaO
35) Mg(CH₃COO)₂
36) Al₂(SO₄)₃
37) Cu₂CO₃
38) BaO
39) (NH₄)₂SO₃
40) AgBr
---
✔ All answers are now filled correctly with explanations. Let me know if you’d like a printable version or flashcards for study!
---
## ✔ Left Column: Name from Formula (1–20)
1) Na₂CO₃ → Sodium carbonate
- Na⁺ (sodium ion), CO₃²⁻ (carbonate ion). Two Na⁺ balance one CO₃²⁻.
2) NaOH → Sodium hydroxide
- Na⁺ and OH⁻ (hydroxide ion). Simple 1:1 ratio.
3) MgBr₂ → Magnesium bromide
- Mg²⁺ and Br⁻. Two Br⁻ needed to balance Mg²⁺.
4) KCl → Potassium chloride
- K⁺ and Cl⁻. Classic 1:1 ionic compound.
5) FeCl₂ → Iron(II) chloride
- Fe²⁺ and Cl⁻. Iron has variable charge; here it’s +2 (since 2 Cl⁻ = -2).
6) FeCl₃ → Iron(III) chloride
- Fe³⁺ and Cl⁻. Three Cl⁻ ions needed → iron is +3.
7) Zn(OH)₂ → Zinc hydroxide
- Zn²⁺ and OH⁻. Two OH⁻ balance Zn²⁺. Zinc has fixed +2 charge, so no Roman numeral needed.
8) Be₂SO₄ → ❗Incorrect formula! Should be BeSO₄
- Beryllium is Be²⁺, sulfate is SO₄²⁻ → correct formula is BeSO₄.
- But since the worksheet says “Be₂SO₄”, we assume it’s a typo. If forced to name as written:
→ Beryllium sulfate (but note: this formula is wrong — should be BeSO₄).
> ✔ *Correction: The actual compound is BeSO₄. Naming Be₂SO₄ would imply Be⁺, which doesn’t exist. So answer: Beryllium sulfate (with understanding that formula should be BeSO₄).*
9) CrF₂ → Chromium(II) fluoride
- Cr²⁺ and F⁻. Chromium is transition metal → use Roman numeral.
10) Al₂S₃ → Aluminum sulfide
- Al³⁺ and S²⁻. LCM of charges: 2×3+ = 6+, 3×2- = 6- → balanced.
11) PbO → Lead(II) oxide
- Pb²⁺ and O²⁻. Lead has multiple charges → need Roman numeral.
12) Li₃PO₄ → Lithium phosphate
- Li⁺ and PO₄³⁻. Three Li⁺ balance one phosphate.
13) TiI₄ → Titanium(IV) iodide
- Ti⁴⁺ and I⁻. Four I⁻ needed → titanium is +4.
14) Co₃N₂ → Cobalt(II) nitride
- Co²⁺ and N³⁻. To balance: 3 Co²⁺ = +6, 2 N³⁻ = -6 → so cobalt is +2.
15) Mg₃P₂ → Magnesium phosphide
- Mg²⁺ and P³⁻. 3×2+ = 6+, 2×3- = 6- → balanced.
16) Ga(NO₂)₃ → Gallium nitrite
- Ga³⁺ and NO₂⁻ (nitrite ion). Three nitrites needed.
17) Ag₂SO₃ → Silver sulfite
- Ag⁺ and SO₃²⁻. Two Ag⁺ balance one sulfite.
18) NH₄OH → Ammonium hydroxide
- NH₄⁺ and OH⁻. Classic base.
19) Al(CN)₃ → Aluminum cyanide
- Al³⁺ and CN⁻. Three cyanides needed.
20) Be(CH₃COO)₂ → Beryllium acetate
- Be²⁺ and CH₃COO⁻ (acetate ion). Two acetates needed.
---
## ✔ Right Column: Formula from Name (21–40)
21) Sodium phosphide → Na₃P
- Na⁺ and P³⁻ → 3 Na⁺ needed.
22) Magnesium nitrate → Mg(NO₃)₂
- Mg²⁺ and NO₃⁻ → two nitrates needed.
23) Lead(II) sulfite → PbSO₃
- Pb²⁺ and SO₃²⁻ → 1:1 ratio.
24) Calcium phosphate → Ca₃(PO₄)₂
- Ca²⁺ and PO₄³⁻ → LCM: 3 Ca²⁺ = 6+, 2 PO₄³⁻ = 6-.
25) Ammonium sulfate → (NH₄)₂SO₄
- NH₄⁺ and SO₄²⁻ → two ammoniums needed.
26) Silver cyanide → AgCN
- Ag⁺ and CN⁻ → 1:1.
27) Aluminum sulfide → Al₂S₃
- Al³⁺ and S²⁻ → 2 Al³⁺ = 6+, 3 S²⁻ = 6-.
28) Beryllium chloride → BeCl₂
- Be²⁺ and Cl⁻ → two chlorides needed.
29) Copper(I) arsenide → Cu₃As
- Cu⁺ and As³⁻ → three Cu⁺ balance one As³⁻.
30) Iron(III) oxide → Fe₂O₃
- Fe³⁺ and O²⁻ → 2 Fe³⁺ = 6+, 3 O²⁻ = 6-.
31) Gallium nitride → GaN
- Ga³⁺ and N³⁻ → 1:1.
32) Iron(II) bromide → FeBr₂
- Fe²⁺ and Br⁻ → two bromides needed.
33) Vanadium(V) phosphate → V₃(PO₄)₅
- V⁵⁺ and PO₄³⁻ → LCM of 5 and 3 is 15 → 3 V⁵⁺ = 15+, 5 PO₄³⁻ = 15-.
34) Calcium oxide → CaO
- Ca²⁺ and O²⁻ → 1:1.
35) Magnesium acetate → Mg(CH₃COO)₂
- Mg²⁺ and CH₃COO⁻ → two acetates needed.
36) Aluminum sulfate → Al₂(SO₄)₃
- Al³⁺ and SO₄²⁻ → 2 Al³⁺ = 6+, 3 SO₄²⁻ = 6-.
37) Copper(I) carbonate → Cu₂CO₃
- Cu⁺ and CO₃²⁻ → two Cu⁺ balance one carbonate.
38) Barium oxide → BaO
- Ba²⁺ and O²⁻ → 1:1.
39) Ammonium sulfite → (NH₄)₂SO₃
- NH₄⁺ and SO₃²⁻ → two ammoniums needed.
40) Silver bromide → AgBr
- Ag⁺ and Br⁻ → 1:1.
---
## 📝 Final Answer Sheet (Filled)
Name Column (1–20):
1) Sodium carbonate
2) Sodium hydroxide
3) Magnesium bromide
4) Potassium chloride
5) Iron(II) chloride
6) Iron(III) chloride
7) Zinc hydroxide
8) Beryllium sulfate *(Note: formula should be BeSO₄)*
9) Chromium(II) fluoride
10) Aluminum sulfide
11) Lead(II) oxide
12) Lithium phosphate
13) Titanium(IV) iodide
14) Cobalt(II) nitride
15) Magnesium phosphide
16) Gallium nitrite
17) Silver sulfite
18) Ammonium hydroxide
19) Aluminum cyanide
20) Beryllium acetate
---
Formula Column (21–40):
21) Na₃P
22) Mg(NO₃)₂
23) PbSO₃
24) Ca₃(PO₄)₂
25) (NH₄)₂SO₄
26) AgCN
27) Al₂S₃
28) BeCl₂
29) Cu₃As
30) Fe₂O₃
31) GaN
32) FeBr₂
33) V₃(PO₄)₅
34) CaO
35) Mg(CH₃COO)₂
36) Al₂(SO₄)₃
37) Cu₂CO₃
38) BaO
39) (NH₄)₂SO₃
40) AgBr
---
✔ All answers are now filled correctly with explanations. Let me know if you’d like a printable version or flashcards for study!
Parent Tip: Review the logic above to help your child master the concept of chemistry naming ionic compounds worksheet.
