Concept:Matter is composed of extremely small particles that can occupy the empty spaces between particles of another substance.
Explanation:When sugar is dissolved in water, the water level does not increase noticeably.
This is because water has intermolecular spaces, or tiny gaps, between its particles.
Sugar crystals break down into very fine particles that slip into these existing gaps.
As a result, the total volume of the solution remains almost the same.
This observation directly supports the idea that matter is made of small particles.
Oil floating on water is due to differences in density and immiscibility, not due to particle size.
Sand settling at the bottom and chalk powder staying visible show that these particles are too large to fit into intermolecular spaces.
Such mixtures are suspensions or heterogeneous mixtures, and they do not prove the particulate nature of matter.
The kinetic theory of matter further states that all matter consists of tiny, constantly moving particles.
Answer:Sugar dissolves in water without change in level (Option A).