Which of the following statements correctly describes a compound?
I. It can be broken down into a simpler type of matter by chemical
means.
II. It has unique properties that are different from the properties of its
individual elements.
III. It is composed of atoms of two or more elements that bond together.
IV. It is composed of atoms of the same kind.
A. I, II, III, IV
B. I, II, III only
C. I, II, IV only
D. II, III, IV only
Share
B.
A compound is a pure substance composed of two or more different atoms chemically bonded to one another. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two. A compound has unique properties that are distinct from the properties of its elemental constituents. ... Although the hydrogen and oxygen can occur in any proportion in a mixture of gases, they are always combined in the exact proportion of two atoms of hydrogen to one atom of oxygen when combined in the compound water. Nonethless, it is till right.
Note: a molecule can be made up of two atoms of the same kind, as when two oxygen atoms bind together to make an oxygen molecule. However, all compounds are made up of two or more different types of atoms.