For a long time man has aspired to reach the stars. Rockets have taken man to the moon and back. Today one of the most spectacular sights to see is the billows of white clouds that accompany a shuttle lift off. It's time to learn about the basic chemistry behind rocketry.
She sells sea shells on the sea shore. You might have heard this tongue twister before. You may even have collected shells from the beach before. But have you ever wondered how these spectacular sea shells get their beautiful colours?
We often find small sachets in the packaging of expensive electronic equipment like cameras or cell phones. These little packets contain substances called desiccants, which are used to ensure everything stays dry.
Every once in a while we fall sick. Our parents use a thermometer to check how sick we are or if we are pretending so that we don't need to go to school. This little instrument is very reliable in telling how warm we really are.
Heat and cold are two important factors that are critical for most chemical reactions. In science, the absolute zero temperature of a substance varies from the zero degree that you see on your thermometer.