Which of the following statements is true?
protons have negative charges.
a piece of gold is made only of gold atoms.
all molecules are compounds.
compounds have the same properties as the elements they are made from

Below.

Explanation:

True:

A piece of gold is made only of gold atoms.

Untrue:

Protons have negative charges ( they are positive).

All molecules are compounds . (Oxygen gas O2 is a molecule but not a compound as the 2 atoms are the same).

Compounds have the same properties as the elements they are made from.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".