stem 2021 topic

 Bubble science 

Task1:

1:My experience is that when I was younger I always buy bubbles to blow pop them

2:The outside and inside surfaces of a bubble consist of soap molecules. 

Task2:

Challenge bubble caterpillar

Experiment:

Purpose:Prepare bubble making liquid following a true and true recipe

Equipment: a set of scales, 250ml breaker, a calibrated syringe and stirring rod 

Ingredients: table sugar glycerol kitchen detergent water 

Method Fill the 2020 ml half full,that is measure 125 mls

Water.

Weigh 5 grams of sugar, stir into the water until the sugar   

 Is dissolved.

Measure 3 mls of glycerol- add water solution.

Measure qo mls detergent-add water solution 

 Stir the contents in the breaker so all ingredients are thoroughly mixed through

 

Out come:

Use the bubble making solution to experiment bubble making