What is soluble?

Soluble means something can be mixed into water or another liquid and disappear, like when you drop a sugar cube into your morning juice.

Imagine you have two types of blocks, one is smooth, and the other is rough. If you try to mix the smooth block with water, it blends in and you can't see it anymore. That’s what happens with things that are soluble. The rough block doesn’t blend in, it just sits there like a rock in your juice.

Some things, like sugar or salt, have tiny pieces that fit together with water molecules, like puzzle pieces. When you put them into water, they spread out and become part of the liquid.

Other things, like oil or sand, don’t fit with water, it’s like trying to mix a wet sponge with a dry one. They just sit on top or settle at the bottom.

So next time you’re drinking juice or making a cup of tea, remember: soluble means something can go into liquid and vanish, just like sugar in your favorite drink!