I need help asap answer this paragrapgh Most substances can exist in more than one , depending on the conditions of and pressure.
Particles more when a solid is heated. Eventually, the vibrations become so violent that the no longer hold the particles in and the solid .
The heat energy supplied during melting is used to the solid’s structure. The temperature remains during melting and is called the . The melting point is an indication of the of the forces of attraction that hold the particles .
When a liquid is heated the particle move , and continually with other particles. Occasionally some of the particles acquire sufficient energy to break of the surface and they . This process is called .
is the process by which a liquid is freely converted to a . When a liquid is heated its temperature rises until the point is reached. Whereas evaporation occurs at the surface, boiling takes place the liquid.
As a liquid cools, its particles lose and move closer together. This movement increases the attraction between the particles and allows them to be arranged in a regular or orderly structure. This change of state is known as .