Changes of several weather states. . . It's simple.

Cloud: (small ice crystals or water droplets should never be understood as water vapor, which is invisible);

(Evaporation) (Liquefaction or sublimation)

Water (liquid) →→→→→→→→ water vapor (gas) →→→→→→→ water droplets (liquid) or small ice crystals (solid).

Snow: small ice crystals

(evaporation) (liquid flowering)

Water (liquid) →→ water vapor (gas) →→ small ice crystals (solid)

rain

(Evaporation) (Liquefaction or sublimation)

Water (liquid) →→→→→→→→ water vapor (gas) →→→→→→→ water droplets (liquid) or small ice crystals (solid).

↓ ↓

↓ (falling directly )↓ (melting during falling)

↓ ↓

Rain rain

Dew: liquid water

(cold liquefaction)

Water vapor (gaseous) →→→→→→ Small water droplets (liquid)

Fog: water droplets

(evaporation) (liquefaction)

Water (liquid) →→ water vapor (gas) →→ water droplets (liquid)

Frost: small ice crystals (frost must condense)

(ninghua)

Water (liquid) →→ water vapor (gas) →→ small ice crystals (solid)

Note: It is also solid water. How to judge whether it is coagulation or solidification?

If it feels soft (frost, snow), it is condensed.

If it is hard (ice), it is solidified.

Common physiological changes in life:

Liquefaction (gas turns into liquid): dew, "white smoke" emitted by popsicles, water droplets (inside) on air-conditioning windows in winter, cloud formation, breathing and industrial production of oxygen (specifically, oxygen in the air is liquefied by cooling and pressurizing in industry, because the liquefaction temperature of oxygen is higher than that of nitrogen, oxygen can be obtained).

Vaporization (liquid turns into gas and boils by evaporation): water evaporates, alcohol evaporates and water boils. . .

Solidification (liquid becomes solid): frozen ice, frost on the ground in winter, hail, snow, freezing of refrigerator, steelmaking, river cut-off (freezing in winter), candlelight after lighting candles, and the formation of amber. . .

Melting (solid turns into liquid): the popsicle melts (tragedy. . ), welding (melting first and then curing), snow melting into water, asphalt melting (softening),,

Sublimation (solid into gas): moth balls become smaller, dry ice sublimates, artificial rainfall (using dry ice to absorb heat), snow becomes less and does not melt, and iodine becomes iodine vapor when heated. .

Condensation (gas becomes solid): window grilles on the bed in winter (outdoor)