Question 2 (5 points) (06.01 LC)
Which of the following statements is true about the average kinetic energy of the particles of a gas? (5 points)
O a
It is directly proportional to the size of the particles.
Oь
It is inversely proportional to the size of the particles.
Ос
It is directly proportional to the temperature of the gas.
Od
It is inversely proportional to the temperature of the gas.

c.

explanation:

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.