Chemistry worksheet for writing word equations based on given chemical reactions.

Let’s go through each reaction one by one. We’re writing word equations, which means we write the names of the reactants (what you start with) on the left, an arrow in the middle, and the names of the products (what you end up with) on the right.

We’ll also include state symbols if they’re given — like “aqueous” (dissolved in water), “solid”, “liquid”, or “gas”. But since this is a word equation worksheet, we can just use words like “(aq)” for aqueous, “(s)” for solid, etc., to keep it clear.

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1. Beryllium chloride + silver nitrate → beryllium nitrate + silver chloride

Reactants:
- aqueous beryllium chloride → BeCl₂(aq)
- aqueous silver nitrate → AgNO₃(aq)

Products:
- aqueous beryllium nitrate → Be(NO₃)₂(aq)
- silver chloride powder → AgCl(s) ← “powder” means solid

Word Equation:
aqueous beryllium chloride + aqueous silver nitrate → aqueous beryllium nitrate + solid silver chloride

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2. Sodium hydroxide + sulfuric acid → sodium sulfate + water

Reactants:
- aqueous sodium hydroxide → NaOH(aq)
- sulfuric acid → H₂SO₄(aq) *(usually aqueous unless specified)*

Products:
- aqueous sodium sulfate → Na₂SO₄(aq)
- water → H₂O(l)

Word Equation:
aqueous sodium hydroxide + sulfuric acid → aqueous sodium sulfate + liquid water

*(Note: Sulfuric acid is typically used as aqueous solution, so we assume that.)*

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3. Solid sodium metal + iron(II) chloride solution → iron metal + aqueous sodium chloride

Reactants:
- solid sodium metal → Na(s)
- solution of iron(II) chloride → FeCl₂(aq)

Products:
- iron metal precipitates → Fe(s) ← “precipitates” here means forms as solid
- aqueous sodium chloride → NaCl(aq)

Word Equation:
solid sodium metal + aqueous iron(II) chloride → solid iron metal + aqueous sodium chloride

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4. Calcium hydroxide + sulfuric acid → calcium sulfate + water

Reactants:
- aqueous calcium hydroxide → Ca(OH)₂(aq)
- sulfuric acid → H₂SO₄(aq)

Products:
- precipitate of calcium sulfate → CaSO₄(s) ← “precipitate” = solid
- water → H₂O(l)

Word Equation:
aqueous calcium hydroxide + sulfuric acid → solid calcium sulfate + liquid water

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5. Iron metal + water → iron oxide + hydrogen gas

Reactants:
- iron metal → Fe(s)
- water → H₂O(l)

Products:
- insoluble Fe₃O₄ → Fe₃O₄(s) ← “insoluble” means solid
- hydrogen gas → H₂(g)

Word Equation:
solid iron metal + liquid water → solid iron(II,III) oxide + hydrogen gas

*(Note: Fe₃O₄ is called magnetite or iron(II,III) oxide — but since the problem says “Fe₃O₄”, we can just say “iron oxide” or specify if needed. For word equations, “iron oxide” is fine unless told otherwise.)*

But to be precise:
→ solid iron metal + liquid water → solid triiron tetroxide + hydrogen gas

However, most school worksheets accept:
→ iron + water → iron oxide + hydrogen gas

But let’s match the problem exactly: it says “insoluble Fe₃O₄”, so we should name it properly.

Actually, in word equations, we usually don’t use formulas — so better to say:

→ solid iron metal + liquid water → solid iron(II,III) oxide + hydrogen gas

OR simpler:
→ iron metal + water → iron oxide + hydrogen gas

But since the problem specifies Fe₃O₄, and it’s a worksheet, I think they expect:

→ iron metal + water → iron(II,III) oxide + hydrogen gas

Wait — actually, looking at common practice, many textbooks just say “iron oxide” for simplicity. But to be accurate, let’s use what the problem gives: “insoluble Fe₃O₄” — so we can call it “solid iron oxide (Fe₃O₄)” — but again, word equations avoid formulas.

Best approach: Use descriptive name.

Final decision:
→ solid iron metal + liquid water → solid magnetic iron oxide + hydrogen gas

No — too fancy.

Standard answer expected:
→ iron + water → iron oxide + hydrogen gas

But let’s check #6 — it uses “iodine” without formula, so probably okay to simplify.

Actually, re-reading #5: “form insoluble Fe₃O₄” — so they want us to know it’s a specific compound. In word equations, we can say:

→ iron metal + water → iron(II,III) oxide + hydrogen gas

Yes, that’s acceptable.

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6. Potassium iodide + bromine → potassium bromide + iodine

Reactants:
- aqueous potassium iodide → KI(aq)
- liquid bromine → Br₂(l)

Products:
- potassium bromide → KBr(aq) *(assumed aqueous unless stated)*
- iodine → I₂(s) or (aq)? Problem doesn’t specify state — but iodine is often solid or dissolved. Since it says “forming potassium bromide plus iodine”, and no state, we can leave as “iodine” — but typically in such reactions, iodine may form as solid or stay in solution. However, since it’s not specified, we’ll just say “iodine”.

Word Equation:
aqueous potassium iodide + liquid bromine → aqueous potassium bromide + iodine

*(Note: Iodine might be written as “solid iodine” if it precipitates, but problem doesn’t say — so we’ll keep it simple.)*

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7. Ammonium carbonate + magnesium sulfate → ammonium sulfate + magnesium carbonate

Reactants:
- aqueous ammonium carbonate → (NH₄)₂CO₃(aq)
- aqueous magnesium sulfate → MgSO₄(aq)

Products:
- aqueous ammonium sulfate → (NH₄)₂SO₄(aq)
- solid magnesium carbonate → MgCO₃(s) ← “solid” specified

Word Equation:
aqueous ammonium carbonate + aqueous magnesium sulfate → aqueous ammonium sulfate + solid magnesium carbonate

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8. Nitrogen gas + oxygen gas → dinitrogen pentoxide gas

Reactants:
- nitrogen gas → N₂(g)
- oxygen gas → O₂(g)

Product:
- dinitrogen pentoxide gas → N₂O₅(g)

Word Equation:
nitrogen gas + oxygen gas → dinitrogen pentoxide gas

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Now, compiling all final answers clearly:

Final Answer:
1. aqueous beryllium chloride + aqueous silver nitrate → aqueous beryllium nitrate + solid silver chloride
2. aqueous sodium hydroxide + sulfuric acid → aqueous sodium sulfate + liquid water
3. solid sodium metal + aqueous iron(II) chloride → solid iron metal + aqueous sodium chloride
4. aqueous calcium hydroxide + sulfuric acid → solid calcium sulfate + liquid water
5. solid iron metal + liquid water → solid iron(II,III) oxide + hydrogen gas
6. aqueous potassium iodide + liquid bromine → aqueous potassium bromide + iodine
7. aqueous ammonium carbonate + aqueous magnesium sulfate → aqueous ammonium sulfate + solid magnesium carbonate
8. nitrogen gas + oxygen gas → dinitrogen pentoxide gas