How does a change in the amount of effervescent tablets affect the pressure inside a water bottle?
The instructor will walk through the classroom prior to beginning the demonstration and check for student understanding. More specifically, the instructor will examine student papers for successful completion of a hypothesis, labeled data table and a properly labeled and titled graph. The instructor will then complete the following procedure: • Place a small amount of room temperature water into three water bottles. • Break 18 effervescent tablets into quarters. • Choose 3 student pairs to help you. One student in each pair will be responsible for dropping the tablets into the water and sealing pull-top onto the bottle. The other student will run a stopwatch. • At one time, the student helpers are to drop four quarters of a single tablet into the bottle, seal the pull-top and begin their timers. • The water bottles are to be sealed tightly and placed upside down into a wide-mouthed container that is slightly larger than the water bottle. • The students will time how long it takes for t
