Select the correct statements for key terms and ideas regarding the components of matter.


a. The properties of compounds are the same as those of their component elements.

b. Ionic compounds often consist of separate entities represented by a formula unit.

c. Heterogeneous mixtures have visible parts and differing regional composition.

d. The atomic mass of an element is given by the mass of the isotope of greatest natural abundance.

d. Elements are composed of one type of atom. Components in a mixture retain their properties.