The reaction above represents
cuso4 + naoh = cu(oh)2 + na2so4

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?