What is meant by the staement that the linear expansivity of copper is 0.17/k?

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Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?