Question

question select the correct answer from each drop - down menu. complete these descriptions of different kinds of chemical reactions. a combustion reaction involves burning. this reaction requires energy to start it. oxygen is always a reactant, and the products are usually. a reaction occurs when a compound breaks down. the reaction is from a battery is usually needed to break the compound. a reaction occurs when two substances combine to form one which does not react with oxygen. the replacement of atoms is a reaction. the end of reaction has two reactants and the neutralization of an acid and an alkali.

Explanation:

A decomposition reaction occurs when a compound breaks down. Energy (often from a battery) is usually needed to break the compound. A synthesis reaction occurs when two substances combine to form one product. A replacement reaction involves the replacement of atoms in a reactant by atoms from another reactant. Combustion involves burning with oxygen as a reactant.

Answer:

The reaction when a compound breaks down: Decomposition
The reaction when two substances combine to form one product: Synthesis
The reaction involving replacement of atoms: Replacement