Which statement describes how chemical formulas, such as H2O, represent compounds? They show the types of molecules that make up an atom. They show the elements that make up a compound. They show the three-dimensional shape of a molecule. They show the types of bonds that exist between elements.

They show the elements that make up a compound

Explanation:

Compound consist of molecules that are identical, this molecules are made up of atoms of two or more elements.

An element is identified based on the atomic property of the element.

Water as a compound is composed of 2 Hydrogen atom to 1 oxygen atom and the molecule is H2O.

Water is composed of molecules hence, they are called molecular compound.

Chemical equation of water is showing elements that it is made up of is

H+ + OH- --- H2O .

the answers are a and c