Objectives

3a)
The main objective of this challenge is to determine the angle of inclination, θ, for which the time of travel across the horizontal track will be least. Students will have to make use of the concepts of conservation of energy, kinetic and potential energy to win this challenge. Students will also make use of a stopwatch and photogate sensors in their data acquisition.

3b)
 In this experiment you will extract caffeine from tea. You will encounter the following techniques:

1) Büchner filtration
2) Solvent extraction
3) Distillation using a rotary evaporator

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