Question

a compound is a pure substance that is composed of more than one type of element. which of the following statements is true of compounds? a. there is only one type of compound, so they all have similar characteristics and compositions. b. compounds can be decomposed into their component parts through physical processes. c. compounds have properties which are identical to the properties of their component elements. d. compounds have definite chemical compositions that can be described by chemical formulas.

Explanation:

A compound is a pure substance composed of more than one type of element. Compounds have definite chemical compositions that can be described by chemical formulas. Option A is incorrect as compounds are made of different elements not just one - type of atom like in an element. Option B is about physical processes which is not the defining characteristic of compounds. Option C is wrong because compounds have different properties from their component elements.

Answer:

D. Compounds have definite chemical compositions that can be described by chemical formulas.