which of the following do water (h₂o), rust (fe₂o₃), and salt (nacl) have in common? a water, rust, and salt…

which of the following do water (h₂o), rust (fe₂o₃), and salt (nacl) have in common? a water, rust, and salt are elements b water, rust, and salt are heterogeneous mixtures c water, rust, and salt are homogeneous mixtures d water, rust, and salt are compounds

which of the following do water (h₂o), rust (fe₂o₃), and salt (nacl) have in common? a water, rust, and salt are elements b water, rust, and salt are heterogeneous mixtures c water, rust, and salt are homogeneous mixtures d water, rust, and salt are compounds

Answer

Brief Explanations:

Elements are pure substances made of only one type of atom. Water ($H_2O$) is made of hydrogen and oxygen, rust ($Fe_2O_3$) of iron and oxygen, and salt ($NaCl$) of sodium and chlorine, so they are not elements. Mixtures are combinations of substances that are not chemically combined. These are chemically - bonded substances, not mixtures. Compounds are substances composed of two or more different elements chemically combined in a fixed ratio, which applies to water, rust, and salt.

Answer:

D. Water, rust, and salt are compounds