Balancing Equations PvP

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 balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure the same number of each type of atom on both sides.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

In the equation 4Al + 3O₂ → 2Al₂O₃, how many aluminum atoms are present?

Back

There are 4 aluminum atoms on the reactant side and 4 aluminum atoms on the product side.

Front

What is the balanced form of the equation: _CH₄ + _O₂ → _CO₂ + _H₂O?

Back

The balanced equation is 1CH₄ + 2O₂ → 1CO₂ + 2H₂O.

Front

What is the purpose of balancing chemical equations?

Back

Balancing chemical equations ensures that the same amount of each element is present before and after the reaction, reflecting the conservation of mass.

Front

In the reaction SnO₂ + H₂ → Sn + H₂O, what are the coefficients for a balanced equation?

Back

The balanced coefficients are 1, 2, 1, 2.

Front

What does it mean if a chemical equation is unbalanced?

Back

An unbalanced chemical equation does not have equal numbers of each type of atom on both sides, violating the law of conservation of mass.

Front

How many molecules of Br₂ are needed to balance the equation CF₄ + _Br₂ → CBr₄ + _F₂?

Back

2 molecules of Br₂ are needed to balance the equation.