Answer : (a)
is a decomposition reaction.
Explanation :
(a)
is a decomposition reaction.
- Decomposition reaction : It is a type of chemical reaction in which a single compound decomposes into two or more compounds.
(b)
is a displacement reaction.
- Displacement reaction : It is a type of reaction in which a most reactive element displaces the least reactive element in a compound.
(c)
is a combination reaction.
- Combination reaction : It is a type of reaction where two or more compounds combine to form a single compound.
(d)
is a combustion reaction.
- Combustion reaction : It is a type of reaction where a hydrocarbon react with the oxygen to produced carbon dioxide and water.
Therefore, option (a) is a decomposition reaction.
Answer:
The outer shell
Explanation:
I am not completely sure what you are looking for but an atom's valence electrons are the outer shell in a Bohr model.
Answer:
I believe your answer will be 3--
As the fuel burns, chemical reactions occur within the fuel, breaking up molecules, forming new molecules, and releasing energy. The energy is released as heat, and allows parts of the engine to move. The chemical energy is transformed into thermal energy.
Explanation:
Hope this helps you!!!
Answer:
A product in science is a substance that is formed when two or more chemicals react.
Explanation:
When a chemical reaction takes place, a new substance is often created from the atoms or molecules of the original substances. There are often multiple products formed in a reaction.