Free Printable Word Equations to Chemical Formulas in Chemical Reactions

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Word Equations to Chemical Formulas in Chemical Reactions

Total questions: 10

Worksheet time: 18mins

Name

Class

Date

When a CHEMICAL reaction occurs, what is made?

No new substance is made.

A new substance is made with new atoms formed

A new substance is made, with existing atoms rearranged

All substances remain the same, but physical state may change.

What does this word equation represent: Iron + oxygen → Iron (III) oxide

A physical change in iron (nothing new gets made)

A chemical reaction between iron and oxygen, where rust (iron oxide) is produced

A chemical reaction between iron and rust, where oxygen is produced

A physical change between iron and oxygen that forms a red color

Magnesium can be burned in air to produce solid magnesium oxide.

2Mg(s) + O₂(g)→ 2MgO(s)

Mg(s) + O(g) → MgO(s)

2Mg(s) + CO₂(g)→ 2MgO(s) + C(s)

2Mg(s) + O₂(g)→ Mg₂O₂(s)

Sodium reacts with chlorine to produce sodium chloride.

NaCl(s) → Cl(g) + Na(s)

Na(s) + CO₂(g) → NaCO₂(s)

2Na(s) + Cl₂(g) → 2NaCl(s)

Na(s) + Cl(g) → NaCl

Iron reacts with sulfur to produce iron (II) sulfide powder.

2Fe(s) + S(s) → Fe₂S(s)

Fe(s) + S(s) → FeS(s)

Fe(s) + S(g) → FeS(s)

4Fe(s) + S₂(g) → 2Fe₂S

When lead reacts with oxygen, a yellow lead (II) oxide powder is produced.

2Pb(s) + O₂(g) → 2PbO(s)

Pb(s) + O₂(g) → PbO₂(aq)

4Pb(s) + O₂(g) → 2Pb₂O(g)

Pb(s) + O(g) → PbO(s)

When hydrogen reacts with sulfur, a smelly gas is produced:

H₂(g) + 2S(s) → 2HS

H₂(g) + S(s) → H₂S(g)

H(g) + S(s) → HS(g)

2H(g) + S(s) → H₂S(g)

What is the correct balanced equation for the following reaction:

A solution of phosphoric acid is mixed with lithium hydroxide forming lithium phosphate and water.

HPO₄ + LiH → LiPO₄ + H₂

H₂PO₃ + 2LiOH → 2H₂O + Li₂PO₄

H₃PO₄ + 3LiOH → 3HOH + Li₃PO₄

H₃P + 3 LiH → Li₃P + 6H

Aqueous zinc chloride reacts with dihydrogen monosulfide gas to yield a zinc sulfide precipitate and hydrochloric acid.

ZnCl₂ + H₂S→ 2HCl + ZnS

ZnCl + H₂S → SCl + ZnH₂

ZnCl₂ +2HS → 2HCl + ZnS₂

HS₂ + ZnCl → HCl + SZn₂

10.

What is the correct balanced equation for the following reaction. Aqueous barium nitrate reacts with sulfuric acid to yield a barium sulfate precipitate and nitric acid

Ba(NO₃)₂ + H₂SO₄ → BaSO₄ + 2HNO₃

BaNO₃ + H₂S→ H₂NO₃ + BaS

BaNO₃ + H₂S→ HNO₃ + BaSO₄

Ba₂NO₃ + H₂SO₄→ H₂NO₃ + BaS

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Word Equations to Chemical Formulas in Chemical Reactions

Total questions: 10

Worksheet time: 18mins

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