1 - Synthesis
2 - Combustion
Chemical Reaction A is synthesis because both elements have synthesized into one, HCl.
Chemical Reaction B is combustion due to the fact that the products are carbon dioxide and water. A combustion reaction is a reaction that produces these products.
Hope this helps!
Answer: The correct answer is Synthesis and Combustion reaction.
Explanation:
Combustion reaction is defined as the chemical reaction in which a hydrocarbon reacts with oxygen to produce carbon dioxide and water.
[tex]\text{hydrocarbon}+O_2\rightarrow CO_2+H_2O[/tex]
Decomposition reaction is defined as the chemical reaction in which a single substance breaks down into two or more simpler substances.
[tex]AB\rightarrow A+B[/tex]
Double displacement reaction is defined as the chemical reaction in which exchange of ions takes place.
[tex]AB+CD\rightarrow AD+CB[/tex]
Single displacement reaction is defined as the chemical reaction in which more reactive element displaces a less reactive element from its chemical reaction.
[tex]AB+C\rightarrow CB+A[/tex]
Synthesis reaction is defined as the chemical reaction in which substances combine in their elemental state to form a single compound.
[tex]A+B\rightarrow AB[/tex]
This reaction is considered as a synthesis reaction because hydrogen gas and chlorine gas are combining in their elemental states to produce hydrochloric acid molecule.
This reaction is considered as a combustion reaction because methane gas is reacting with oxygen gas to produce carbon dioxide gas and water molecule.
Thus, the correct answer is Synthesis and combustion reaction.
