Generally when heated, the molecules in both solids and liquids vibrate faster and take up more 'space' thus expansion. I'm sure there are a few exceptions like ice, for example.
Liquids are generally heavier than solids because the molecules in liquids are more densely packed together and have more mass per unit volume compared to solids. Additionally, liquids tend to have a higher density than solids, making them heavier when compared in equal volumes.
The density of solids is generally higher compared to liquids and gases because the particles in solids are more closely packed together. Liquids have a higher density than gases due to their closer particle arrangement, but lower density than solids. Gases have the lowest density as their particles are the most spread out and have the most kinetic energy.
Yes, sound waves typically travel fastest in solids due to the high density of particles allowing for faster transmission. Liquids generally have a lower density compared to solids, so sound waves travel slower in liquids compared to solids.
Gas expands the most for an increase in temperature, followed by liquids, with solids expanding the least. This is because the particles in gases have the most kinetic energy and move more freely than particles in liquids and solids, allowing them to expand more readily.
Compared to liquids and solids, yes a very low density.
The solubility increase with the temperature (extremely rare exceptions exist).
no
Solids
because of density
in relation to solids or liquids in liquids: Density. A lighter density compound/liquid will float in a heavier density liquid
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)
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)
Cause your body contains a very high temperature causing the solids to dissolve into liquids
Some liquids are denser than others. In general, everyday experience, most liquids are denser than gases, but not as dense as solids. There are some exceptions to this rule.
particle density
Gases
In the case of gases yes. For a gas, the density is directly proportional to the pressure and inversely proportional to the temperature (absolute ie Kelvin). In other words the higher the temperature the lower the density. This is because gases expand with temperature. Liquids and solids do expand but only slightly so there is not much change in density for these.