Eggshells are fragile. Everyone knows that. Drop an egg on the floor, or knock it against a sharp edge (like a frying pan) and that is it – eggshell, white…
Do plants breathe? Yes and no… Breathing and respiring are two different things. Mammals, including humans, breathe by using muscles to pull air into the lungs and push it out,…
When an acid is mixed with a carbonate, a type of alkaline chemical, the two chemicals react and form the gas carbon dioxide. This can be quite dramatic! Making Gas…
The body’s sense of touch is a combination of pressure, pain and temperature. Different parts of the body have different numbers of nerve endings, because it’s more important to be…
New pennies and two pence pieces are bright copper, but after a while, they turn dull. This is because the copper reacts with oxygen in the air to form copper…
Ants are insects and are from the order Hymenoptera, the same order as wasps and bees. They were first seen about 110 to 130 million years ago. Ants are 0.75…
To grow crystals, you need to start with a saturated solution – water that has as much, sugar, salt or whatever crystal ingredient dissolved in it as it possibly can….
When people think about bacteria and fungi, they usually think of not being well or food going sour or mouldy, but actually bacteria and fungi are essential for foods we…
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…
