Melting a substance because it would still be the same substance just in a different physical form
Answer:
it's the first one liquid because the atoms are close together with no regular arrangement vibrant but generally do not move from place to place
gas particles are normally all over the place and if you put them in a sealed container the particles will jump around and be all of the container
solid particles with set all together and not move and it will not try to mold to the shape of the container
liquid particles move around and try to shape to the container
The mass number is defined as the total number of protons and neutrons in an atom.
Answer:
Explanation: Chromatography involves solvent separation on a solid medium. Distillation takes advantage of differences in boiling points. Evaporation removes a liquid from a solution to leave a solid material. Filtration separates solids of different sizes.
Answer:
The number of energy levels increases as you move down a group as the number of electrons increases. Each subsequent energy level is further from the nucleus than the last. ... The outermost electrons are repelled by the inner shell electrons (Screening effect) and hence, the atomic size increases.
Explanation:Increase in atomic size
