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Category: Let’s Experiment!

It’s elementary, dear chemist!

Yasmin Jayathirtha
How can the periodic table be used as a link between the world of atoms and the world of reactions? The author suggests that by studying the development of the periodic table, students see that scientists have made the attempt to group elements according to their properties. The author has listed some activities that will help students get familiar with the structure of the periodic table.

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Visible reactions

Yasmin Jayathirtha
Chemistry is all about reactions. The reactions are first seen at the test tube level and then students try and make sense of what is happening at the larger level— where the reactions are actually happening—in the atoms, ions and molecules. Teachers need to really pass on this skill to students, to help them see a reaction, write down the observation and then visualise it at the level of the particles

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Making it visible

Yasmin Jayathirtha
While talking about the atomic structure, most teachers find it difficult to explain to students about how an atom looks. Questions like what led to the idea of atoms, what could be the size of the atoms do come up because students are being taught about things that they cannot see. This article illustrates a few concepts that can be understood.

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The art of separation

Yasmin Jayathirtha

We know that a lot of things around us are present in the form of mixtures. Mixtures of two liquids, a liquid and a solid, two solids, etc. What lessons can we learn by separating a mixture? What are the different ways we can separate different mixtures?

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