What is the movement of water up a narrow tube due to attractions with the surface of the tube called? capillary action meniscus polarity surface tension.

100mg magnesium reacts with 20ml of 1.0m hcl

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.

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?