Which of the following provides evidence to support Thomson's hypothesis about electrons?? A.) Gold foil experiment

B.) Cathode ray experiments

C.)Spectrum of colors emitted by gas

D.) Radiation produced when beryllium is bombarded with alpha particles

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled