What statements about the atomic structure were validated by his cathode ray experiments?

In the late 1800s, J. J. Thomson built on earlier experiments using cathode ray tubes. The radiation emitted from the cathode (negative electrode) was accelerated toward the anode (positive electrode) in these tubes and was observed to be the same regardless of the composition of the cathode. In the atom, the particles of the cathode rays are embedded in a diffuse cloud of positive charge. Cathode rays have mass. Matter contains positive and negative charge. The positive component of matter is also particulate in nature. Particles of the cathode rays are fundamental to all matter. An atom is divisible. Particles of the cathode rays are negatively charge.

Do u have the n? or maybe the m?

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)