When atoms combine, the force of attraction that holds them together is a(

Electrostatic, meaning the attraction from one's positive nucleus is to the negative electrons of the other atom and vis versa.

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.

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