Final answer:
The time a hockey player spends on ice per game can vary and is not always 20 to 30 minutes. The references provided discuss physics concepts like object fall time and phase changes involving ice, which are governed by physical laws.
Step-by-step explanation:
The statement about playing a game of hockey and getting anywhere from 20 to 30 minutes of ice time may vary widely and cannot be universally declared as true or false without context. However, the given reference about a piece of ice taking about 2.5 seconds to hit water is a problem related to physics, particularly kinematics. The time it takes for an object to fall is determined by the laws of gravitation and motion.
Regarding the referenced phase change and latent heat scenario, the statement that when you sprinkle salt on an ice cube, it causes the ice and thread to stick together is true. This is a result of the salt lowering the freezing point of water, leading to a refreezing process that causes the thread and the ice cube to adhere and allows you to lift the ice cube by the thread.