The chemical formula for water is H20. What does the formula show about each element in the compound?

Select one:

the mass of protons in each atom

the number of atoms of each element

the number of valence electrons

the charge of the compound

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.