Dear readers, Recently on the 17 Feb, I had the chance to involve students in conducting their own chemistry experiments in the laboratory. Apart from having fun and applying key concepts in the topic on Rates of Reaction. The safe use of chemicals such as using secondary containment and safety spectacles; data recording in the chemistry report were discussed. This was part of bringing out the discipline required of students to do higher science. Readers of Chemistry will learn that the speed of reaction depends on five major factors. The examination questions base on this key concept are in fact easy to score. Student should understand in terms of molecular movement with respect to: 1. Temperature of the reaction mixture 2. The surface area of the reactants 3. The pressure of gaseous reactants 4. Presence of catalyst 5. Concentration of the reactants In this investigation, the students namely Syaqil, Faheem and Isaac (first left, middle and right) have charged equal volume of Vinegar ...

Hello All, Just before the first term of the year ended on 29 Mar, i gave the class a chemistry experiment to prepare for the last lesson. As with all experiments, the students learnt to write a report and along with it have a lot of fun setting up the experiments. Title: My Volcano Experiment Aim: To study the rate of reactions Equipments: As seen in the photos Procedure: Basically, we kept everything constant and we varied the temperature of the vinegar. We used a fixed quantity of hot, ice cold and ambient vinegar. We used the hair dryer to warm up the vinegar; we used an ice /salt bath to cool the vinegar down to below zero. Conclusion: The rate of reaction between hot vinegar and sodium carbonate was the fastest, followed by ambient vinegar and cold vinegar. This is because, molecules at high temperature have high kinetic energy that will collide more frequently and at greater speed to produce effective reation. Here are some amazing photos that the students have taken. I hope ...