To show and then play a movie, click on the arrow or the movie title/description. Repeat to hide it.
UCR L1 Movie 1: Iron
UCR L1 Movie 2: Sulfur
UCR L1 Movie 3: Iron and sulfur, initial mixture
UCR L1 Movie 4: Iron and sulfur reaction
UCR L1 Movie 5: Iron (II) sulfide properties
UCR L1 Movie 6: Evaporation of salt water
UCR L1 Movie 7: Vinegar and oil