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In this video, we will learn how to perform chemical calculations using the concept of limiting reactants.

2022 O Level Science (Chem) Practical Exam

2023 O Level Science (Chem) Practical Exam

Video Submission for Fe STEM Teacher Challenge 2023 www.science.edu.sg/for-schools/teacher-professional-development/fe-stem-teacher-challenge In this video, I share three simple yet eye-catching demonstrations that teachers can use to teach different concepts in Chemistry. 🍋 DEMONSTRATION 1: FLAMMABLE FRUIT 🍋 You can use this to illustrate the flammable properties of limonene, a natural compoun...

Spirulina is a type of blue-green algae that is often considered a superfood. Watch as it emits an intense red fluorescence by just shining visible light! But wait, there’s a twist! Introduce copper(II) ions, and witness the magic fade as the fluorescence gets quenched.

Behold the mesmerising magic of the TV Rock! 📺✨ This gemstone called Ulexite never fails to amaze with its unique properties. Can you believe that it acts like a natural fibre optic cable? #science #chemistry #physics #education #physicstoys #stem #scienceisfun #scienceiscool #scicomm #instascience

Get ready to set sail! The Putt Putt Steam Boat is both fun and educational at the same time. It has a small boiler that heats up the water and creates steam, which propels the boat forward. It's a simple concept, but it's so fascinating to watch in action! Can you apply the Kinetic Particle Theory in explaining these observations? #science #physics #physicstoys #education #stem #physicsisfun #...

Singapore is well-known for its humid weather and so I bought a mini dehumidifier for my storeroom. In the product description, it was mentioned that the dehumidifier worked using a Thermo Electric Peltier Module. That got me curious and I did a little research. The generation of a temperature gradient from an electric current is called the Peltier Effect. The fan in the dehumidifier draws air ...

Dry ice is a fascinating substance. Besides the fun of watching it sublime, why not try out some of these experiments that demonstrate the physical and chemical properties of carbon dioxide? Let a piece of dry ice sublime in a flask and you have an invisible fire extinguisher! Carbon dioxide, which is an acidic oxide, can also be used to perform colourful demonstrations involving acid-base indi...

This glue does more than just sticking things together. Watch to find out! Made with Elmer’s Disappearing Purple Glue

Why is the sky blue in the day and yellow/orange during sunset? The Sunset Egg is a fun and effective tool to understand the science of light scattering. We can easily replicate this effect by adding a few drops of milk to water.

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