This is the 2nd CityKidz Young Scientists visit to the University of Johannesburg Science Faculty for a group of grade 6 and 7 learners.
First was a tour of the UJ library, where learners were introduced to various sections including rare collections, digital processes for library loans and a glimpse into their future when CityKidz learners themselves would be using the high-tech facilities. In the laboratories, CityKidz learners were dressed in white coats and protective eyewear, just like real scientists. They were introduced to scientific fields, from chemistry to physics and engineering. Learners were awestruck by the complexity of the machinery and equipment, such as laser cutters, spectrometers and 3D printers. The mentors took time to explain how each instrument worked and what kind of experiments could be performed using them. Learners were shown some practical applications for architectural models and jewellery design.
The highlight of the day was the series of interactive workshops where the learners got the chance to perform experiments. In the chemistry laboratory, learners conducted exothermic experiments. They mixed household chemicals to observe reactions, which left many wide-eyed with amazement as they watched colours change and gases form. A popular activity was making elephant toothpaste. Elephant toothpaste is a chemical reaction that makes a volcano of foam when soapy water traps gases from the rapid decomposition of hydrogen peroxide.
Hlumelo Magewana summed up the day: My visit to UJ was amazing, inspirational and fun. I learnt about exothermic and endothermic reactions. Our mentors were very informative, answering our many questions. The lab visit was so much more than just about experiments. I learned about future careers, possibilities, journeys I may make one day.
