Solid iodine is heated and immediately produces a toxic, purple, gas. which phase change has occurred here?
melting
sublimation
condensation
evaporation

Sublimation

Explanation:

Sublimation is the direct conversion of a solid to a gas.

A. is wrong. Melting is the conversion of a solid to a liquid.

C. is wrong. Condensation is the conversion of a gas to a liquid.

D. is wrong. Evaporation is the conversion of a liquid to a gas.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

the answer is na (sodium)