Chemistry uses chromatography to separate mixtures of chemicals. The word chromatography comes from the Greek words for ‘colour’ and ‘to write’. Paper chromatography is a simple form of chromatography, and…
‘Impossible bottles’ are bottles containing things that appear too big to have been put in through the neck of the bottle, such as ships, decks of cards, or whole fruit…
Oil and water don’t mix – they are described as ‘immiscible’. Crude oil floats on the sea after a spill from a tanker. Motor oil shows up as a sheen…
Minibeasts are small invertebrates and include arthropods such as spiders, insects, woodlice, centipedes and millipedes, as well as slugs and snails and worms. Invertebrates are animals without backbones, which means…
Different parts of the country have soft or hard water. Hard water is water that has travelled through certain types of rock, including limestone, chalk and dolomite, and has forms…
Mites are small invertebrates from the group Arachnida, the same group as spiders. Many people are not aware of the mites around them, as most mites are microscopic. Mites as…
Many people feel that they have to travel to the countryside to see flowers and trees, but according to a study in Germany in 2008, there are more different species…
Rubber is a natural product made from latex. Many plants, including dandelions, produce latex but most of the world’s latex, the key ingredient of rubber, comes from the rubber tree,…
Potatoes are tubers produced by the stems of the plant called Solanum tuberosum, which is part of the same family as tomatoes, peppers and aubergines. The plant produces tubers to…
