What state of matter are the particles moving in one direction?

The correct answer to this question is liquid. Liquids are fluids that are incompressible. Out of all the states of matter, liquids are the only one that has a volume, but no shape. They take the shape of the container. For example, if you pour water into a glass, it will confirm to that glass.

If you pour it into a bowl, the water will conform to the shape of that bowl. Water is the most abundant liquid we have on Earth. Other examples of liquids include blood and soda. The tiny particles referred to in this question are normally atoms, that are held together by intermolecular bonds.