The change from liquid to solid, or the reverse of melting, is calleda. condensation.
b. boiling.
c. sublimation.
d. freezing.

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

What is the main purpose of patent attorneys? defend the company against legal claims manage financial investments invent new products protect rights to new products and processes