Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, following the law of conservation of mass.

Front

What does the coefficient in a chemical equation represent?

Back

The coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

How do you determine if a chemical equation is balanced?

Back

Count the number of atoms of each element on both sides of the equation. If they are equal, the equation is balanced.

Front

What is the first step in balancing a chemical equation?

Back

Identify the number of atoms of each element in the reactants and products.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

Balance the equation: __H₂ + __O₂ --> __H₂O

Back

2, 1, 2

Front

What is the balanced form of the equation: __C₃H₈ + __O₂ --> __CO₂ + __H₂O?

Back

1, 5, 3, 4

Front

What does it mean if a reaction is already balanced?

Back

It means that the number of atoms for each element is the same on both sides of the equation without needing to adjust coefficients.

Front

What is the balanced equation for the combustion of propane (C₃H₈)?

Back

C₃H₈ + 5O₂ --> 3CO₂ + 4H₂O

Front

What is the significance of balancing chemical equations in real-world applications?

Back

Balancing chemical equations is crucial for understanding reaction stoichiometry, predicting product yields, and ensuring safety in chemical processes.