Balancing Equations & Types of Reactions

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products involved.

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances in a chemical reaction, found on the left side of the equation.

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

What is the purpose of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides, adhering to the law of conservation of mass.

Front

What are coefficients in a chemical equation?

Back

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

Front

What are subscripts in a chemical formula?

Back

Subscripts are the small numbers written after an element in a chemical formula that indicate the number of atoms of that element in a molecule.

Front

How many HCl molecules are needed to balance the equation: Mg + __HCl -> MgCl2 + H2?

Back

2 HCl molecules are needed to balance the equation.

Front

How many manganese (Mn) atoms are in the compound 2MnO4?

Back

There are 2 manganese (Mn) atoms in the compound 2MnO4.

Front

What are the products of the combustion of methane (CH4)?

Back

The products of the combustion of methane are carbon dioxide (CO2) and water (H2O).

Front

What is the left part of a chemical equation called?

Back

The left part of a chemical equation is called the reactants.