A change in volume with a constant, unchanging Pressure and Temperature results in increased or decreased density, inversely dependent on increase or decrease in volume.
Typically, a lower temperature denotes higher density, but many LIQUIDS are uncompressible (water actually expands slightly as it freezes) and therefore density in maintained. FLUIDS on the other hand encompass both liquids and gasses, of which gasses ARE compressible and will increase in density as temperature drops.
The intermolecular strength is higher in liquids than in gases.
Liquids and gases can change shape without any change in weight.
Liquids yes, gasses yes, solids no
ANSWER unlike solids, both liquids and gases can change their shape to fit the container in which they are held. however, gases can also change volume unlike liquids.
Not all liquids have lower densities than all solids. Low density solids frequently contain air or other gasses as part of their makeup (cok, Styrofoam, etc)
As a very basic answer, the energy from the heat causes the atoms to move. As they move faster and faster, they spread apart further and further, causing solids to become liquids and liquids to become gasses. In the same sense, as matter cools, the atoms slow down and condense back into liquids and solids.
it becomes thinner. mass can't be created or destroyed, it only encompasses solids , liquids, and gasses.
molecules move more in gasses gasses>liquids>solids
gasses
Liquids and gasses tend to expand when heated, this lowers the density, thus warm "air" rises and cool air falls.
The state of matter with the lowest density is gas. Gases have molecules that are far apart and are free to move around in any direction, resulting in a low density compared to liquids and solids.