Copper can be broken into simpler substances so what is it

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.

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .