Balancing
Balance this equation: H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
Is the following equation a combination, decomposition, single-replacement, or double-replacement?
CaO + CO₂ → CaCO₃
Combination
Write a balanced chemical equation for the reaction between sodium metal and chlorine gas to form solid sodium chloride.
2Na(s) + Cl₂(g) → 2NaCl(s)
What is the correct formula for aluminum sulfide?
Al₂S₃
Balance this equation: N₂ + H₂ → NH₃
N₂ + 3H₂ → 2NH₃
What type of reaction is this? NaCl + AgNO₃ → NaNO₃ + AgCl
Double Replacement
Convert the following equation into words:
Zn(s) + CuSO₄(aq) → ZnSO₄(aq) + Cu(s)
Zinc metal reacts with aqueous copper(II) sulfate to form aqueous zinc sulfate and solid copper.
What is the correct name for the covalent compound N₂O₄?
Dinitrogen tetroxide
Balance this reaction: Al + O₂ → Al₂O₃
4Al + 3O₂ → 2Al₂O₃
Identify the type of reaction: CaCO₃ → CaO + CO₂
Decomposition
Write the chemical equation for the decomposition of potassium chlorate into potassium chloride and oxygen gas.
2KClO₃ → 2KCl + 3O₂(g)
What is the formula for magnesium hydroxide?
Mg(OH)₂
Balance the equation: C₄H₁₀ + O₂ → CO₂ + H₂O
2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O
What type of reaction is this? C₆H₁₂ + 9O₂ → 6CO₂ + 6H₂O
Combustion
Aluminum metal reacts with iron(III) oxide to produce aluminum oxide and iron metal. Write the balanced equation.
2Al + Fe₂O₃ → Al₂O₃ + 2Fe
What is the correct formula for iron(III) sulfate?
Fe₂(SO₄)₃