Law of Conservation of Mass

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; it is conserved.

Front

What does a balanced equation indicate?

Back

A balanced equation indicates that the number of atoms of each element is the same on both sides of the equation.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles of that substance are present.

Front

What is a subscript in a chemical formula?

Back

A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.

Front

How do you determine if a chemical equation is balanced?

Back

To determine if a chemical equation is balanced, count the number of atoms of each element on both sides of the equation and ensure they are equal.

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances in a chemical reaction that undergo change to form products.

Front

What are products in a chemical reaction?

Back

Products are the substances formed as a result of a chemical reaction.

Front

What does it mean if an equation is unbalanced?

Back

An unbalanced equation means that the number of atoms of at least one element is different on the reactant side compared to the product side.

Front

Give an example of a balanced chemical equation.

Back

2H₂ + O₂ → 2H₂O is a balanced equation.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is important because it reflects the conservation of mass and allows for accurate stoichiometric calculations.