8
practice testMultiple Choice

Practice Test

Question 8 • CMS 2026-2027 Biology CREDIT RECOVERY

A scientist is working with methane open paren CH sub 4 close paren and butane open paren cap c sub 4 cap h sub 10 close paren Which statement best compares these chemicals?

Answer
A
They are matter made of the same two compounds, but each contain different types of elements.
B
They are two different types of molecules that each contain the same number of atoms.
C
They are compounds made of the same two elements, but each contain different numbers of atoms.
D
They are two different types of atoms that are each made up of a different number of elements.

Explanation

Methane (CH₄) and butane (C₄H₁₀) are both compounds made from carbon and hydrogen. Methane has 1 carbon atom and 4 hydrogen atoms, while butane has 4 carbon atoms and 10 hydrogen atoms. Therefore, they contain the same two elements but different numbers of atoms, as choice D states.

AI-written and checked against the verified answer.

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