Okay kiddo, you know how when you mix juice powder with water, it dissolves and disappears into the water, right? Well, suspension is when you mix something like sand with water, and it doesn't dissolve, but the sand stays in the water, kind of floating around.
So, when we talk about suspension in chemistry, we mean a mixture of two things where one thing will not dissolve in the other thing completely, but will stay mixed together. These things can be anything like sand, salt, or even tiny particles like dust or pollen.
Suspensions are important in chemistry because they allow us to keep things that don't dissolve well in a liquid, like medicines, evenly dispersed so that we can use them. They are also used to separate different materials that do not mix well together, like oil and water.
Understanding suspension is important in many scientific fields like medicine, engineering, and environmental science, because it helps us to better understand how different types of mixtures behave in different situations.