Balancing Equations/ Types of Equations Practice

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 each substance involved in the reaction.

Front

What is a subscript in a chemical formula?

Back

A subscript is a small number written to the lower right of an element symbol in a chemical formula that indicates the number of atoms of that element in a molecule.

Front

What does the Law of Conservation of Mass state?

Back

The Law of Conservation of Mass states that matter cannot be created or destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What type of reaction is represented by the equation C + O2 → CO2?

Back

This is a synthesis reaction, where two or more reactants combine to form a single product.

Front

What is the difference between a synthesis reaction and a decomposition reaction?

Back

A synthesis reaction combines two or more substances to form a new compound, while a decomposition reaction breaks down a compound into simpler substances.

Front

What is a single replacement reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another element in a compound.

Front

What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where the anions and cations of two different compounds exchange places, forming two new compounds.

Front

What is the purpose of balancing chemical equations?

Back

Balancing chemical equations ensures that the Law of Conservation of Mass is obeyed, meaning the same number of each type of atom is present on both sides of the equation.

Front

What does it mean if a chemical equation is unbalanced?

Back

An unbalanced chemical equation does not have the same number of atoms of each element on both sides, violating the Law of Conservation of Mass.