Balancing Act
The law that states mass is neither created nor destroyed in a chemical reaction?
What is the Law of Conservation of Mass?
A reaction where two elements combine to form a compound.
What is a synthesis reaction?
The term for the number in front of a compound in a balanced equation.
What is a coefficient?
What does stoichiometry allow us to calculate in a reaction?
What is the amount of reactants or products?
What is the reactant that runs out first in a chemical reaction?
What is the limiting reactant?
True or False: You can change subscripts when balancing an equation.
What is False?
A reaction where a compound breaks down into simpler substances.
What is a decomposition reaction?
The mole ratio of H₂ to H₂O in the reaction 2H₂ + O₂ → 2H₂O.
What is 2:2 or 1:1?
What is the first step in any stoichiometry problem?
What is balance the chemical equation?
What is the reactant that is left over after a reaction?
What is the excess reactant?
Balance the equation: C₃H₈ + O₂ → CO₂ + H₂O
What is C₃H₈ + 5O₂ → 3CO₂ + 4H₂O?
A reaction where a hydrocarbon reacts with oxygen to produce CO₂ and H₂O.
What is a combustion reaction?
Given N₂ + 3H₂ → 2NH₃, how many moles of NH₃ are produced from 6 moles of H₂?
What is 4 moles?
If 2 moles of H₂ react with O₂, how many moles of H₂O are formed? (2H₂ + O₂ → 2H₂O)
What is 2 moles?
If you react 4 moles of H₂ with 2 moles of O₂ in 2H₂ + O₂ → 2H₂O, which is the limiting reactant?
What is H₂?
Balance the equation: H₂ + O₂ → H₂O
What is 2H₂ + O₂ → 2H₂O?
What type of reaction is most commonly used in fireworks to produce heat, light, and sound?
What is a combustion reaction?
In C₃H₈ + 5O₂ → 3CO₂ + 4H₂O, what is the mole ratio of O₂ to CO₂?
What is 5:3?
If you have 5 moles of O₂ in C₃H₈ + 5O₂ → 3CO₂ + 4H₂O, how many moles of CO₂ are produced?
What is 3 moles?
If you have 6 moles of Fe and 2 moles of O₂ in 4Fe + 3O₂ → 2Fe₂O₃, which is limiting?
What is O₂?
Balance the equation: Al + Fe₂O₃ → Al₂O₃ + Fe
What is 2Al + Fe₂O₃ → Al₂O₃ + 2Fe?
What type of reaction occurs when water is broken down into hydrogen and oxygen gas using electricity?
What is an electrolysis reaction?
True or False: Mole ratios are derived from the subscripts in a formula.
What is False?
If 4 moles of Al react in 2Al + 3Cl₂ → 2AlCl₃, how many grams of AlCl₃ form?
What is 533.3 g AlCl₃?
If 3 moles of CH₄ react with 10 moles of O₂ in CH₄ + 2O₂ → CO₂ + 2H₂O, which is in excess?
What is O₂?