Yes, water is a bend molecule with a bond angle of about 105 degrees. They are described as bent planar (or V shaped)
Yes because You see how the forces arent balanced .. O / \ the forces aren't symmetrical O O
The shape of the Silicon tetrachloride molecule is tetrahedral, a very symmetrical form.
Yes; all water molecules are bent. The H-O-H bonding of the three atoms is never in a straight line. Unfortunately, you need to know some Qantum Mechanics to understand why. More unfortunately, I...
Because an HCl molecule is diatomic it is impossible for it to be anything other than linear.