Is it a liquid or a solid?

This is our science project and what we first did was got our ingredients and put them in a bowl.The ingredients we included were cornflour, water, a wooden spoon, a bowl and green food colouring.

We poured half a box of cornflour into a bowl.Then gradually poured water over the bowl and mixed until it looked and felt like custard.Then when you ran your fingers through it, it acted like a liquid.  But when you punched it , it became hard and behaved like a solid.  The cornflour particles are suspended in the water, so it flows like a liquid, but when you apply a force to it, the particles are locked together, acting like a solid.  As soon as the force stops, the slime goes back to behaving like a liquid.