Hoàn thành các phương trình phản ứng sau K20 + H2O->

SO2+02 ->

Cu + O2 ->

CH4 + O2->
GIUP TO VOI

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

Visible light is located in the middle of the spectrum.