Chem Selection Step
Select image for Frame 1 (before the reaction)





Select the best picture for Frame 1 (before the reaction)
Select image for Frame 2 (right after the reaction starts)



Select the best picture for Frame 2 (right after the reaction starts)
Select image for Frame 3 (later during the reaction)



Select the best picture for Frame 3 (later during the reaction)
Select image for Frame 4 (after the reaction)



Select the best picture for Frame 4 (after the reaction)
The End