the critical temperature is for the phase stability? When the phase changes,the energy needed is smaller than the material melton,
The melting temperature of an alloy is generally lower than the melting temperature of the highest melting temperature of all of its constituents. The eutectic melting temperature is the lowest melting temperature of an alloy system and is in fact sort of defined by that optimal set of percentages of those constituents. The next obvious question is whether there are calculation methods or approximations to determine the melting range of less than "eutectic" percentages.
Solid state
higher
higher
Yes, the Earth's crust has a wide range of melting points depending on the type of rock, but in general, the temperatures required to melt rocks in the crust are higher than the typical surface temperatures of the Earth. The actual temperature of the Earth's crust is generally lower than its melting point.
It's melting point is lower than your body temperature.
The temperature of the outer core is higher than its melting point. The outer core is mainly composed of liquid iron and nickel, which has a melting point higher than the temperature of the outer core due to the immense pressure at that depth.
The freezing point of a substance is lower than its melting point because freezing involves the removal of thermal energy to transition from liquid to solid, while melting requires adding thermal energy to transition from solid to liquid. The freezing point is where the substance goes from a higher energy state (liquid) to a lower energy state (solid).
The melting temperature of magma is primarily influenced by factors such as pressure, composition, and water content. Increased pressure raises the melting temperature, while different mineral compositions can lower it due to variations in the melting points of the constituent minerals. Additionally, the presence of water in magma decreases the melting temperature, promoting the formation of magma at lower temperatures than would be required in its absence.
sugar molecules that have weaker intermolecular forces compared to salt molecules. This results in sugar melting at a lower temperature than salt.
Mercury; gallium melt also in very hot summer days.
The melting temperature for solids depends on the material of the solid. For example, ice melts at a much lower temperature than iron.