Density reason is that the density of a uniform material is constant Density is independent of the size and shape of the sample.
density
Depends on the pressure, temperature and rate of shear. See mechanisms this page to view responses different conditions.
1
Normal pressure & above 840 degrees C.
At room temperature it is solid but under different pressure and temperature conditions it could be a liquid or gas (as can anything else).
Increased temperature and/or pressure.
pasterisation
... the substance can exist in the solid, liquid, and gaseous phases all at the same time.
Yes, under the same physical conditions influencing volume that is true (e.g. temperature and pressure).
"A phase diagram is a graph of pressure versus temperature that shows in which phase a substance exists under different condition of temperature and pressure" -Glencoe Chemistry Book
Phase Diagram
A catalyst is a substance that enables a chemical reaction to proceed under different conditions. It lowers the activation energy required for the reaction to occur, allowing it to happen more quickly or at a lower temperature or pressure. The catalyst itself remains unchanged in the reaction and can be reused multiple times.
Temperature and pressure
Are you talking about gases? I think there is a mistake in the question you are asking.
The relationship between pressure and temperature depends on the conditions and the substance involved. In general, for ideal gases, pressure and temperature are related by the ideal gas law, which is given by the equation: � � = � � � , PV=nRT, where: � P is the pressure, � V is the volume, � n is the number of moles of gas, � R is the ideal gas constant, and � T is the temperature in kelvin. According to the ideal gas law, pressure is directly proportional to temperature when other parameters are held constant. This means that, for an ideal gas, if the temperature increases while other factors remain constant, the pressure will also increase, and vice versa. However, for real gases and under certain conditions, the relationship between pressure and temperature can be more complex, and deviations from ideal behavior may occur. In some cases, other factors such as intermolecular forces and the nature of the substance can affect the relationship between pressure and temperature. Therefore, it's important to consider the specific conditions and properties of the substance in question.
Temperature and pressure
The type of substance; the substance outside this substance, the pressure, the temperature.
The temperature and pressure of the atmosphere must be at that point or in an interval of values for the substance to be saturated. When mixing solutions, the temperature and pressure must be within a certain range for the substance to dissolve.