Molecules

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How Does Ice float?

How Does Ice float?

A cool glass of water topped with huge chunks of ice is sure to quench your thirst on a hot summer day. But, before you guzzle the water, look at how the ice floats on the water surface. How do these large ice pieces manage to stay afloat? Ice floats because it is less dense than water. (If you take a one-litre container with ice and weigh it, it will be lighter than a similar container with water....

How Is Jelly Formed?

How Is Jelly Formed?

Had a good dinner? Now how about some cool custard with jelly on the side for dessert? Doesn’t the jelly look inviting, a transparent red-coloured blob sitting pretty on the plate, making you long to dig your spoon into it? Called Jell-O in the United States of America, jelly changes shape with the change in temperature. It stays sets at room temperature, which is between 0 degrees and 20 degree C. Warm it to about 27 degree C and watch it disintegrate into a watery mixture....

Everything is made of something

Everything is made of something

How do you make tea? Simple, put a teaspoon of tea into a boiling cup of water. Strain the water, pour some milk and sugar to taste and the tea is ready! Interestingly, everything that we prepare has a recipe and is made up of simpler ingredients. For example, what is sugar made of? It is made of sugar molecules, which in turn, are made up of atoms. The atom is the building block of all substances....

Why's it hard for Ketchup to flow?

Why's it hard for Ketchup to flow?

Why is it so tough to get ketchup out of the bottle? Why’s it hard for Ketchup to flow? [Illustration by Shinod AP] When you overturn a sauce bottle that has been left untouched for some time, chances are, either the sauce will not come out at all or a gigantic blob will plop down on your plate. Getting ketchup to ‘flow’ out of the bottle can be quite an ordeal....

What is the Software for Life?

What is the Software for Life?

We all use computers. If you use Windows on your machine, like me, you will have a small button at the the bottom of your screen called ‘Start’. Every machine in the world which has the Windows software installed has to have that button. However, we can have different screen colours, different text sizes, wallpapers etc. Similarly our bodies are essentially the same, but we have different colours, sizes, shapes and structures. Our body also has a software which is responsible for these differences between one human being and another....

How do Spiderwebs Help Skydivers?

How do Spiderwebs Help Skydivers?

While dusting the house have you ever cross jhalis (webs) in the corners of the wall? Sometimes you may come across them under table corners or at rarely used places. Yes, the webs are woven by spiders. It’s a nuisance clearing them for just when you manage to remove one sticky web, the spider scurries off to a corner to spin yet another! How do Spiderwebs Help Skydivers? [Illustration by Anup Singh] But before you destroy these webs with a sweep of the broom, here’s some food for thought – you are about to dismantle one of the strongest structures in the natural world!...

Screen Saver that saves

You can find a cure for cancer. Sounds impossible? But, it could become true. Now, there is a way in which you can be a part of a high-tech research team and perhaps hit upon the right combination to make a cancer drug. Screen Saver that saves [Illustration by Shinod AP] All you have to do is download a certain software and use it as a screen saver. This way your computer might find the way to make that wonder drug....

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