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When a substance is cooled, its particles lose kinetic energy and move more slowly, causing them to come closer together. This reduction in particle movement typically results in a decrease in the volume of the substance, as the particles occupy less space. In most cases, this leads to the substance contracting; however, exceptions exist, such as water, which expands upon freezing.
Particle Movement decreases.
the particle will vibrate more slowly around its position.
When cooled enough it will condense into a liquid. The required temperature changes with the substance.
An atom is the smallest particle of a substance.
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The particle speed increases.The energy increases; the speed increases.
The density of the substance becomes higher because of the particles slow down and move closer together when the substance cools.
a pure substance
This particle is the neutron.
As heat is added to a substance, the particles in the substance gain kinetic energy and move faster. This increased movement causes the particles to vibrate and collide more frequently, leading to an expansion of the substance.
atoms