When a hot metal plate at 150°C is placed in air at room temperature, the surrounding air molecules will speed up while the molecules in the metal will slow down.
The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.
When a hot metal plate at 150°C is placed in air at room temperature, the air molecules surrounding the metal will gain energy and speed up due to the heat transfer from the metal plate. In contrast, the metal molecules will lose energy to the cooler surroundings and slow down as they transfer their thermal energy.
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