Is it true that the most reactive metals are quite plentiful in the Earth's crust?​

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.

The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures