Empty bottles with balls on the neck were placed in bowls of hot and cold water. what pictures can you see after that?

The balloon placed on the heated bottle will begin to inflate. A ball on a bottle placed in cold water will be drawn into the bottle. What is happening is explained by the Gay-Lusak law for isobaric processes, that is, occurring at constant pressure (in this case, the environment): the volume of a constant mass of gas increases in direct proportion to the increase in temperature.