Which of the following statements describes a physical property?
the substance has a higher density than water.

a. the substance forms a solid when reacted with silver nitrate.

b. the substance is highly reactive.

c. the substance produces an acid when dissolved in water.

The substance has a higher density than water

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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