Water

Question 1

Shape

Answer 1

Angular

Question 2

Bond angle

Answer 2

104.5

Question 3

The structure of water in the solid state

Answer 3

With further cooling water to 0°C and lower, water changes into the solid phase and form ice crystals. The hydrogen bonds are very strong and the molecules are held in a crystal lattice. Each water molecule is bonded in the ice crystal with four hydrogen bonds to four other water molecules in a tetrahedral structure. Hexagonal rings originate. Repetition of these rings in space, yields an open structure so that the density of ice is lower than that of water

Question 4

Surface tension

Answer 4

Is the resistance that a liquid offers against a force that threatens to enlarge its surface

Question 5

Capillarity

Answer 5

Capillarity is the ability of a liquid to flow against gravity

Question 6

Cohesion vs adhesion forces

Answer 6

Cohesion: Intermolecular forces between liquid molecules of the same kind
Adhesion: intermolecular forces between different types of molecules