Question

Which of these can be decomposed by a chemical change?

Answer 1

Chemical changes can decompose compounds into their constituent elements. Carbon monoxide (CO) in option B is a compound and can undergo chemical decomposition, making it the correct choice.

Chemical changes involve the breaking or formation of chemical bonds.

Among the given elements and compounds, only Carbon Monoxide (CO) in option B can be decomposed by a chemical change. During decomposition, CO can be broken down into its constituent elements, carbon, and oxygen. In contrast, elements Cobalt (Co), Chromium (Cr), and Copper (Cu) do not naturally undergo decomposition through chemical changes.

They are stable elements that retain their identity in various reactions. Recognizing the difference between elements and compounds is crucial in understanding which substances can undergo chemical changes, including decomposition reactions.

Answer 2

B) CO

Step-by-step explanation:

Chemical decompsition or breakdown is defined as the process in which a substance can be broken down into simpler compounds through chemical means.

CO or carbon monoxide can be decomposed by chemical change because it can be broken down into into carbon and oxygen.

While Co (cobalt), Cr (chromium), and Cu (coppoer) are present in its simplest form and can not be decomposed further.

Hence, the correct answer is "B) CO".