Cell Differentiation and Specialization — Cumulative exam

Question 11 • PMHS Biology I Q2

A scientist is working with methane (CH4) and butane (C4H10). Which statement best compares these chemicals?

Answer

They are two different types of molecules that each contain the same number of atoms.

They are two different types of atoms that are each made up of a different number of elements.

They are compounds made of the same two elements, but each contain different numbers of atoms.

They are matter made of the same two compounds, but each contain different types of elements.

Explanation

Methane (CH4) contains carbon and hydrogen: 1 carbon atom and 4 hydrogen atoms. Butane (C4H10) also contains carbon and hydrogen, but it has 4 carbon atoms and 10 hydrogen atoms. So they are compounds made of the same two elements with different numbers of atoms.

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