Another experiment we carried out as part of our chemical reactions topic, was creating bath bombs. This experiment was not as simple as creating lava lamps. It required more ingredients and a tricker method. We were so focused on following the instructions correctly that we forgot to take pictures of the process. A few days after the experiment, we tried and tested our bath bombs in water. To our surprise, they all worked very well leaving a lovely lavender smell and creating bubbles of gas and a fizzing sound as they dissolved in the water. 

As part of our chemical reactions topic in Science we created our very own lava lamps. Before beginning the experiment, we discussed the equipment needed, our predictions and the method for the experiment. We recorded this information on our science investigation sheets and then split into groups to begin. Below are the steps we followed.

1. Fill up 2/3 of a plastic bottle with vegetable oil. 
2. Add 1/3 of water until the bottle is filled up to the top.
3. Add 5-10 drops of food colouring. 
4. Break up 1 alka-seltzer tablet into smaller pieces.
5. Add 1 piece of the tablet to the bottle and look out for a reaction.

The tablet reacts with the water and oil mixture to create huge bubbles and a fizzing sound. We were definitely fascinated by this experiment.

Have a look at some pictures from our experiment below. 

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