Answer 1) The property of gases called as "Compressibility" allows the gases to be pressurized and stored in containers. The compressibility of a substance (in gaseous state) can be defined as the change in volume (per unit volume) per unit change in pressure. They contain high concentration with high pressure in the bottle of air freshener.
Answer 2) The changes that usually observed when the ice-cream starts to melt and form liquid at the molecular level is that; the molecules in the compound come closer to each other.
As the ice present inside starts to melt, the orderly arrangement gets disturbed and collapses. The water molecules trapped inside starts to move and pass each other which actually brings them closer together as liquid water. Here, the energy is transferred to the water molecules in the ice, and the motion of the molecules increases.
Answer 3) Gaseous State
Explanation : "Highest molecular motion, highest kinetic energy, no forces of attraction, least dense packaging of molecules." This statement can be true only for the gaseous state molecules. As solid would have compact arrangement of the molecules in their structure, whereas liquids will have loosely bonded molecules in structure. Gaseous state molecules are the only molecules which are least densely packed and has no forces of attraction.
