Word equation for Na2O+H2O → NaOH

Sodium oxide + Water - - - > Sodium Hydroxide.

the mass of the cathode increases because ions from the solution get reduced to atoms and become part of the cathode.

explanation:

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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.