Question

question 26 of 30
how are all compounds similar?
a. they are all made up of atoms of two or more different elements.
b. they are all made up of ions that are held together by attractions.
c. they are all made up of the same few elements.
d. they are all made up of atoms that share electrons.

Explanation:

By definition, a compound is a substance formed when two or more different elements combine chemically. Option B only applies to ionic compounds, not all compounds. Option C is incorrect as compounds can be made from a wide - range of elements. Option D only applies to covalent compounds, not all compounds.

Answer:

A. They are all made up of atoms of two or more different elements.