Combination and Decomposition Reactions

Front

What is a decomposition reaction?

Back

A chemical reaction where one reactant breaks down into two or more products.

Front

How can you identify a decomposition reaction?

Back

It has only one reactant.

Front

What are coefficients in a chemical equation?

Back

Larger numbers that can be changed to balance the equation.

Front

What is a synthesis reaction?

Back

A chemical change in which two or more substances react to form a new substance.

Front

What is the role of subscripts in a chemical formula?

Back

They indicate the number of atoms of each element in a molecule.

Front

How many oxygen atoms are in the molecule (OH)₂?

Back

2 oxygen atoms.

Front

What is the difference between reactants and products?

Back

Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result.

Front

What is a combustion reaction?

Back

A chemical reaction that involves the burning of a substance in the presence of oxygen, producing heat and light.

Front

What does it mean to balance a chemical equation?

Back

To ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.