Ligroin

Ligroin is a big word that describes a type of liquid that is used in chemistry. It's a bit like gasoline or petrol that goes into cars, but it's used for something different.

Imagine you have a big jar of mixed-up colored beads, and you want to separate them by color. One way to do that is to pour the beads into a smaller container with tiny holes in the bottom. Then you pour some water on them and the water comes through the holes and takes some beads with it. But not all of the beads will come out, and some of the colors might mix together.

That's where ligroin comes in. It's a special liquid that you can pour onto the beads instead of water. When you do that, only some of the colors stick to the ligroin and the rest stay behind. Then you can pour off the liquid and you'll have some beads that are one color and others that are a different color.

Ligroin is really good at separating different substances like this because it has some special properties. It is flammable, which means it can burn easily, so you have to be careful with it. It also evaporates quickly, which means it turns into a gas when it's exposed to air. That's why it's often used in laboratories where scientists work with chemicals.

In summary, ligroin is a liquid used in chemistry to separate different substances by pouring it over them and collecting the bits that stick to it. It's flammable and evaporates quickly, so it's used with care.