Types of chemical reactions and balancing chemical equations

Front

What is a chemical reaction?

Back

A process in which atoms rearrange to form new substances.

Front

What are reactants in a chemical reaction?

Back

The starting materials in a chemical reaction.

Front

What type of reaction is represented by the equation: Si + S8 → Si2S4?

Back

Synthesis (combination) reaction.

Front

What type of reaction is represented by the equation: 2 H3AsO4 → As2O5 + 3 H2O?

Back

Decomposition reaction.

Front

Which type of reaction can be recognized by the general pattern: A + B → AB?

Back

Composition (synthesis) reaction.

Front

What is a combustion reaction?

Back

A chemical reaction that occurs when a substance reacts with oxygen, producing energy in the form of heat and light.

Front

What is a single replacement reaction?

Back

A reaction where one element replaces another 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

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 balanced chemical equation?

Back

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