Water becomes less dense when it freezes because the water molecules forms crystal structures of (a)   arrangement.

all forces holding a liquid together

(a)  

all forces holding the liquid and the surface

(a)  

Water forms a concave meniscus (surface) in a capillary because the cohesive forces holding the liquid together are (a)   than the adhesive forces of water molecules between each other.

Water can act as both acid and base, which means that it is (a)   in nature.

During the process of photosynthesis, water is (a)   to O2.

Water has a very strong (a)   due to its high dielectric constant. It means that it can dissolve many ionic compounds (higher dissociation constants).

ratio of inertial forces to viscous forces

(a)  

Moderates temperature by preventing extremes.

(a)  

Important control on biological activity (photosynthesis) in water bodies and on atmospheric temperature.

(a)  

Excellent solvent for ionic salts and polar molecules because of dipolar nature.

(a)  

Re>4000

(a)  

Re>2300

(a)  

Re<2300

(a)