Why don’t noble gases normally bond with other elements?

a. They are chemically stable.

b. They are not chemically stable.

c. They are in the gaseous state.

d. They do not have outer energy levels.

Ice waters melt to form liquid water. The water spreads out to match the shape of its container. After heating on the stove, the water begins to boil and change into steam. Which statement is true about this process?

a. The average kinetic energy of the water molecules increases as time passes.

b. The average kinetic energy of the water molecules does not change as time passes.

c. The average kinetic energy of the water molecules increases and then decreases as time passes.

d. The average kinetic energy of the water molecules decrease as time passes.