Final answer:
A particle model of matter explains the structure and behavior of matter at a microscopic level, using atoms as the building blocks. Atoms are indivisible particles that are identical for a given element and differ between elements. This model helps explain the properties of gases, liquids, and solids.
Step-by-step explanation:
A particle model of matter is a way to understand the structure and behavior of matter at a microscopic level. According to the particle model, matter is subdivided into tiny particles called atoms which cannot be further divided. These atoms are the building blocks of all matter and are identical for a given element, but differ between elements. The particle model helps explain various properties of matter, such as the behavior of gases, liquids, and solids.