حبايب ايش صار في السؤالين التاليين :
The three dimensional crystal of water when freezes due to _________ .22
.hydrogen bonds
weak (A
stable (B
mild (C
unstable (D
ionic (E
و
.adhesion accounts for the attraction between water molecules .92
adhesion accounts for the attraction between water and the (A
.vessel walls
cohesion accounts for the attraction between water and the (B
.vessel walls
.root pressure is a significant force in driving water up a stem (C
all of the above are not true (D