Balancing and types of equations

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

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, ensuring that mass is conserved.

Front

What is the general form of a synthesis reaction?

Back

A synthesis reaction has the general form A + B → AB, where two or more reactants combine to form a single product.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products, represented as AB → A + B.

Front

What is a single displacement reaction?

Back

A single displacement reaction occurs when one element replaces another in a compound, represented as A + BC → AC + B.

Front

What is a double displacement reaction?

Back

A double displacement reaction involves the exchange of ions between two compounds, represented as AB + CD → AD + CB.

Front

How do you balance the equation: N2 + O2 → NO?

Back

To balance the equation, place a coefficient of 2 in front of NO: N2 + O2 → 2NO.

Front

What is the coefficient for H2 in the balanced equation: Al + HCl → H2 + AlCl3?

Back

The coefficient for H2 is 3, making the balanced equation: 2Al + 6HCl → 3H2 + 2AlCl3.

Front

What is the coefficient for O2 in the balanced equation: 2H2 + O2 → 2H2O?

Back

The coefficient for O2 is 1, as the equation is already balanced.

Front

What is the purpose of balancing chemical equations?

Back

The purpose of balancing chemical equations is to ensure that the same number of each type of atom is present on both sides of the equation, reflecting the conservation of mass.