Conversion relation of solid liquid gas

Conversion relation of solid liquid gas

It changes with the decrease of temperature and the increase of pressure. It is a process that gas changes into liquid and liquid into solid. But there are some exceptions: the sublimation of ice directly changes into water vapor, or vice versa

What is the physical reaction of liquid to gas

First, the volume is greatly increased
Second, the intermolecular force becomes smaller and smaller at the micro level, while the effective force becomes larger and smaller at the micro level
Third, the distance between molecules becomes larger
Fourth: endothermic
Fifth: energy increase
Sixth, the molecular potential energy and kinetic energy should be increased

There is a handicraft named pure metal, with a mass of 100 grams and a volume of 6 cubic centimeters, to judge whether it is metal or not

It should be judged whether it is made of pure gold, ρ gold = 19.3 × 10 3kg / M 3 = 19.3g/cm 3. Method 1: calculate the density of the handicraft, ρ = m / v = 100g / 6cm 3 = 16.7g / cm 3 ＜ 19.3g/cm 3, so the handicraft is not made of pure gold. Method 2: calculate the quality, assuming that the handicraft is made of pure gold, and the mass of 6cm 3 is m = ρ v =