Reactants and Products Review

Front

What are reactants in a chemical equation?

Back

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

Front

What are products in a chemical equation?

Back

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

Front

What does the arrow (→) in a chemical equation represent?

Back

The arrow represents 'yields' or 'produces', indicating the direction of the reaction from reactants to products.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a compound to indicate how many molecules or moles of that compound are involved in the reaction.

Front

What is a subscript in a chemical formula?

Back

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

Front

What is the chemical formula for water?

Back

H₂O, which indicates that each molecule of water is made up of two hydrogen atoms and one oxygen atom.

Front

What is the chemical formula for hydrogen peroxide?

Back

H₂O₂, which indicates that each molecule of hydrogen peroxide is made up of two hydrogen atoms and two oxygen atoms.

Front

What are the products of the reaction: C₆H₁₂O₆ + O₂ → CO₂ + H₂O?

Back

The products are carbon dioxide (CO₂) and water (H₂O).

Front

What does it mean when a reaction is balanced?

Back

A balanced reaction has the same number of each type of atom on both sides of the equation, following the law of conservation of mass.

Front

What is the purpose of balancing a chemical equation?

Back

Balancing a chemical equation ensures that mass is conserved during the reaction, meaning the same amount of matter exists before and after the reaction.