Chemical Reactions Test

Front

What is a chemical reaction?

Back

A process in which substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

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, reflecting the conservation of mass.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

Substances that are formed as a result of a chemical reaction.

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 and heat.

Front

What is a decomposition reaction?

Back

A type of chemical reaction where one compound breaks down into two or more simpler substances.

Front

What is a single replacement reaction?

Back

A reaction in which one element replaces another element in a compound.

Front

What is a double replacement reaction?

Back

A reaction where two compounds exchange ions or bonds to form two new compounds.

Front

How do you determine the number of grams of a missing reactant in a reaction?

Back

Use the law of conservation of mass: total mass of reactants = total mass of products.