CP Chem. Balancing & Classifying Equations Practice

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 it mean to balance a chemical equation?

Back

Balancing a chemical equation means adjusting the coefficients in front of the reactants and products to ensure that the same number of each type of atom is present on both sides.

Front

What are coefficients in a chemical equation?

Back

Coefficients are the numbers placed in front of the compounds in a chemical equation to indicate the number of molecules or moles of that substance.

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; the total mass of reactants equals the total mass of products.

Front

How do you determine the coefficients needed to balance an equation?

Back

To determine coefficients, start by counting the number of atoms of each element in the reactants and products, then adjust the coefficients to equalize them.

Front

What is the balanced equation for the reaction of aluminum and iron(II) oxide?

Back

2 Al + 2 FeO → Al2O2 + 2 Fe.

Front

What is the balanced equation for the formation of hydrogen sulfide from hydrogen and sulfur?

Back

H2 + S → H2S.

Front

What product is formed when sodium chloride reacts with fluorine gas?

Back

The product is sodium fluoride (NaF) and chlorine gas (Cl2). The balanced equation is 2 NaCl + F2 → 2 NaF + Cl2.

Front

Which of the following is a balanced equation: 2Na + 2H2O → 2NaOH + H2?

Back

Yes, this equation is balanced because it has equal numbers of each type of atom on both sides.

Front

What is the balanced equation for photosynthesis?

Back

6 CO2 + 6 H2O → C6H12O6 + 6 O2.