Experimental science is when scientists want to learn something new, they do experiments. It's kind of like when you try something new to see what happens. For example, when you mix water and oil together, you see that they don't mix. That's like an experiment!
Scientists use special tools and machines to test things in their experiments. They want to see what happens when they change things in their experiments, like adding more or less of something. This helps them learn something new or figure out how things work.
Experimental science is important because it helps us learn new things about the world around us. It can help us cure diseases, make new inventions, and discover new things about our universe. So, even though it might seem complicated, it's really just trying new things and seeing what happens!