Even a few crystals of potassium permanganate can impart color to a large volume of water, suggesting that there are millions of tiny particles within each crystal that disperse and mix throughout the water.
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By performing experiments or observations that investigate the behavior of matter at different scales and conditions, scientists can gather evidence to support one theory over the other, providing insight into whether matter is continuous or composed of discrete particles.
Those supporting the particulate theory argued that matter was composed of tiny, indivisible particles that could not be further divided. They likened matter to grains of sand, each particle having a distinct and finite size.
Proponents of the continuous theory believed that matter had no ultimate smallest units and could be divided infinitely, much like cutting a block of wood into smaller and smaller pieces without reaching a fundamental building block.
One school believed matter to be continuous, akin to a block of wood, while the other school thought that matter was composed of particles, similar to grains of sand.