Predict the Type of Reaction
H₂ + O₂ → H₂O
What is a synthesis reaction?
Synthesis — Na + Cl₂ → ?
What is NaCl?
H₂ + O₂ → H₂O
What is 2H₂ + O₂ → 2H₂O?
What are the five main types of chemical reactions?
What are synthesis, decomposition, single replacement, double replacement, and combustion?
The rusting of iron is an example of what type of reaction?
What is a synthesis reaction?
2KClO₃ → 2KCl + 3O₂
What is a decomposition reaction?
Decomposition — CaCO₃ → ?
What is CaO + CO₂?
N₂ + H₂ → NH₃
What is N₂ + 3H₂ → 2NH₃?
What law requires chemical equations to be balanced?
What is the Law of Conservation of Mass?
When baking soda is heated, it breaks down into sodium carbonate, water, and carbon dioxide. What type of reaction is this?
What is a decomposition reaction?
Zn + HCl → ZnCl₂ + H₂
What is a single replacement reaction?
Single replacement — Mg + HCl → ?
What is MgCl₂ + H₂?
Al + O₂ → Al₂O₃
What is 4Al + 3O₂ → 2Al₂O₃?
In a combustion reaction, what two products are always formed (assuming complete combustion)?
What are carbon dioxide and water?
Why do fireworks display different colors when they explode (think: flame test)?
What is because of different metal ions reacting and emitting specific wavelengths of light?
AgNO₃ + NaCl → AgCl + NaNO₃
What is a double replacement reaction?
Double replacement — BaCl₂ + Na₂SO₄ → ?
What is BaSO₄ + 2NaCl?
C₄H₁₀ + O₂ → CO₂ + H₂O
What is 2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O?
What is the difference between a subscript and a coefficient in a chemical equation?
What is a subscript tells the number of atoms in a molecule, and a coefficient tells the number of molecules (I.e. moles).
When vinegar (acetic acid) reacts with baking soda (sodium bicarbonate), bubbles form. What gas is being released?
What is carbon dioxide?
CH₄ + O₂ → CO₂ + H₂O
What is a combustion reaction?
Combustion — C₂H₆ + O₂ → ?
What is CO₂ + H₂O?
Fe₂O₃ + C → Fe + CO₂
What is 2Fe₂O₃ + 3C → 4Fe + 3CO₂?
Why must chemical equations be balanced?
What is to ensure matter is neither created nor destroyed in a reaction?
In your car’s engine, fuel burns in oxygen to release energy. What type of reaction is this, and what are the products?
What is a combustion reaction; the products are carbon dioxide and water?