Which of the following statements about a compound is true?
a. the physical and chemical properties of a compound are usually very different from those of the elements from which it is formed.
b. only the physical properties of a compound are usually the same as those of the elements from which it is formed.
c. only the chemical properties of a compound are usually the same as those of the elements from which it is formed.
d. the physical and chemical properties of a compound are usually the same as those of the elements from which it is formed.

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.