HELP ME OUT PLEASE BRO, IF YOU GOT ME. THEN I GOT YOU AS WELL What do we call a solid liquid or gas that can't be broken into anything else? (LOOK AT THE PICTURE, THOSE ARE THE CHOICES YOU CHOOSE FROM.)

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.

May someone me with these science questions

How far in advance is weather forecasting most accurate