Do you know the chemistry of the world around us?
Do you know the chemistry of the world around us?
Take the test and find out how well you know chemistry.
Take the test and find out how well you know chemistry.
What gas makes up the largest percentage of the composition of the atmosphere?
What is the lightest gas?
Which of these is a solid in normal conditions?
What does the film on the surface of aluminum consist of?
What class of substances do fats belong to?
This carbohydrate is the main component of cotton, linen and timber.
This hydrocarbon is often used in torch welding and cutting metal, as in combustion in oxygen the temperature of its flame reaches 3 000 °С
During the campaign in India, the entire army of Alexander the Great ate the same food. But officers suffered from gastrointestinal irritation less than soldiers did. What were the dishes for officers made of?
This metal is called “inexhaustible”, because springs made from its alloy can withstand up to 20 billion load cycles. For comparison: the best steel spring cannot withstand more than a million compressions. What is this metal?
In the 19th century this metal was used to gild the domes of St. Isaac’s Cathedral in Saint-Petersburg. It evaporated and left a layer of gold on the copper that was one micron thick.