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.

A(n) is a molecule influences the way that a molecule reacts.

Which of th following is needed for cellular respiration to occur

Which of the following statements is a scientific claim? a. the early solar system had large amounts of water; so, the oldest objects in the solar system should also be abundant in water. b. earth is shaped like a sphere even if not all of the scientific observations related to its shape support this idea. c. the mass of the universe is much greater than current models predict; it is not possible to explain this inconsistency. d. planet earth is abundant in water, but there is no way to scientifically determine from where earth's water originated.