It looks like you've uploaded a worksheet titled
"Naming Compounds" that includes several chemistry problems related to naming chemical compounds and writing their formulas. However, since I can't view images directly, I can’t see the specific content of the image or the exact questions.
But based on the visible text in your description, here's what I can infer:
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🔬 Overview of the Worksheet:
The worksheet appears to cover:
1.
Rules for naming ionic and covalent compounds.
2.
Writing chemical formulas from names.
3.
Naming compounds from formulas.
4.
Balancing equations using correct compound names.
Let me walk through
how to solve typical problems like these, so you can apply it to your worksheet.
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🧪 Step-by-Step Guide to Solving These Problems
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✔ 1. Naming Binary Ionic Compounds (Metal + Nonmetal)
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Rule: Name the metal first, then the nonmetal with "-ide" ending.
-
Example:
- NaCl → Sodium chloride
- MgO → Magnesium oxide
> If the metal has variable charges (like Fe, Cu, Cr), use Roman numerals to indicate charge:
> - FeCl₂ → Iron(II) chloride
> - FeCl₃ → Iron(III) chloride
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✔ 2. Naming Covalent (Molecular) Compounds (Nonmetal + Nonmetal)
- Use prefixes (mono-, di-, tri-, etc.) to show number of atoms.
- The second element ends in "-ide".
-
Example:
- CO₂ → Carbon dioxide
- N₂O₄ → Dinitrogen tetroxide
> Note: "Mono-" is usually omitted for the first element.
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✔ 3. Writing Formulas from Names
- Use charges to balance ions.
- For example:
- Aluminum sulfate → Al³⁺ and SO₄²⁻
→ Cross charges: Al₂(SO₄)₃
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✔ 4. Polyatomic Ions
Memorize common ones:
- NO₃⁻ → Nitrate
- SO₄²⁻ → Sulfate
- PO₄³⁻ → Phosphate
- OH⁻ → Hydroxide
- NH₄⁺ → Ammonium
> Example:
> - Ca(NO₃)₂ → Calcium nitrate
> - NH₄Cl → Ammonium chloride
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📝 Sample Problem Walkthrough
Let’s assume one of the questions is:
>
Name the compound: K₂SO₄
Solution:
- K⁺ is potassium (fixed charge)
- SO₄²⁻ is sulfate (polyatomic ion)
- So:
Potassium sulfate
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>
Write the formula for: Copper(II) nitrate
Solution:
- Cu²⁺ (copper with +2 charge)
- NO₃⁻ (nitrate)
- Balance: Cu(NO₃)₂
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>
Balance: Magnesium + oxygen → magnesium oxide
Equation:
- Mg + O₂ → MgO
- But need to balance:
→ 2Mg + O₂ → 2MgO
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✔ Tips for Completing Your Worksheet
1.
Identify the type of compound (ionic, covalent, polyatomic).
2.
Use charge rules to write formulas.
3.
Apply prefixes for molecular compounds.
4.
Double-check subscripts and charges when balancing.
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🛠️ How You Can Proceed
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- The actual questions or answers you're stuck on.
- Or copy-paste the text from the worksheet.
Then I’ll give you
detailed step-by-step solutions tailored to your problem.
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Parent Tip: Review the logic above to help your child master the concept of compounds worksheet.
