Junior Secondary Science Video-based Self-learning Pack - Science Experiments

"Tinted Liquid"

Water of different temperatures are tinted with blue and red colour using food dye. They are contained in two jars respectively. In the following video, an experiment is conducted using the tinted water.

"Burning of Steel Wool"

The following video shows an experiment conducted using steel wool which contains iron. The steel wool is burnt during the experiment.

"Three Solutions"

The following video shows a few drops of universal indicator being added to solution A (left), solution B (centre) and solution C (right) respectively.

"Vinegar and Calcium Carbonate"

The following video shows an experiment conducted using calcium carbonate powder and vinegar.

"Candy"

The following video shows two identical candy cubes being placed in petri dish A and petri dish B respectively. It is known that the same volume of water at different temperatures are contained in both petri dish A and petri dish B.

"Rainbow"

The following video shows solutions A and B being added to a filter paper. After that, a drop of universal indicator is added in between the solutions A and B.

"Melting Ice"

The following video shows two experiments, in which ice is placed at different positions of the test tube. Water is then added to the test tubes followed by heating with a Bunsen burner.

"Burning Candles"

The following video shows three identical candles being placed in the Jars X, Y and Z respectively. It is known that Jars X and Y are of the same height and volume.

"Three Substances"

The following video shows an experiment conducted using substances A, B and C. It is known that substance A and substance B are elements, while substance C is composed of substance A and substance B.

"Water and Cooking Oil"

The following video shows an experiment with two identical metal clips being placed on the surface of water and on the surface of cooking oil respectively. (Remark: the density of water is about 1.0 g/cm³ ; the density of cooking oil is about 0.9 g / cm³)