Which of the following is the definition of a hypothesis?
a. a testable scientific question
b. an interesting question for further research
c. an informed explanation that can be tested
d. a type of experiment that provides information

Write a paragraph at least 10 sentences explaining how rocks are used today in society

Type the letter that represents the correct location for each particle type below.

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.