Chemical Reactions and Types

Front

What is an exothermic reaction?

Back

A chemical reaction that releases heat or energy.

Front

What are reactants in a chemical equation?

Back

The substances at the beginning or on the left of a chemical equation.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs energy or stores energy during the process.

Front

How do you balance a chemical equation?

Back

By adjusting the coefficients in front of the reactants and products to ensure the same number of each type of atom on both sides.

Front

What are products in a chemical equation?

Back

The substances formed as a result of a chemical reaction, found on the right side 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.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved in the reaction.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both sides of the equation.

Front

What is a combustion reaction?

Back

A chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat.