Which of the following observations supports that matter is made of small particles?

The observation that sugar dissolves in water without an increase in the water level provides strong evidence that matter is made of tiny particles. This phenomenon occurs because the tiny particles of sugar separate and occupy the empty spaces between the particles of water. Since they fit into these existing gaps, the overall volume of the solution does not rise significantly. This supports the theory that matter is not continuous, meaning it is composed of millions of tiny, discrete particles that are too small to be seen individually by the naked eye. For questions regarding the nature of matter, remember that diffusion and dissolution are the two primary proofs used to show that particles are small and in constant motion.