At Templer Park International School, Rawang (TPIS), learning science is all about discovering how the world works through hands-on experiences!

Our Grade 9 students recently stepped into the laboratory to investigate the fascinating topic of reaction rates using acidified potassium manganate(VII), methanol, and hydrochloric acid. What made this experiment especially exciting was the beautiful colour transformation that unfolded before their eyes.

As the reaction progressed, students observed a stunning gradient ranging from light purple to dark purple. The darker purple areas indicated a higher concentration of potassium manganate(VII), while the lighter shades showed where the concentration had decreased as the reaction took place. Watching the colours change gave students a visual representation of the chemical processes happening at the molecular level.

Through this practical investigation, students explored Collision Theory, which explains that chemical reactions occur when particles collide successfully. They learned that the rate of reaction increases when there are more frequent and effective collisions between particles. By observing the changing colours over time, students could see how reaction rates influence the speed at which reactants are converted into products.

Beyond the science itself, the activity encouraged students to develop important laboratory skills such as careful observation, accurate recording of results, critical thinking, and scientific analysis.

At TPIS, we believe that the best learning happens when students can connect theory with real-world experiences. Experiments like these spark curiosity, deepen understanding, and inspire our young scientists to ask questions, investigate, and discover.

Who knew chemistry could be so colourful? 🌈🧪