EASC-101 Lecture Notes - Lecture 8: Viscosity, Boiling Point, Ductility
8 Apr 2016
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Document Summary
The particle model of matter is an important part of what you will be learning in this unit. Recall that: all matter is made up of tiny particles, all the particles in a substance are the same; different substances are made of different particles. There are attractive forces among particles-these attractions may be strong or weak. The particles are always moving; the more energy the particles gain, the faster they move. The particle model of matter is a scientific model which helps to visualize a process we cannot see directly. The first two points help us to understand that particles make up matter. The other three points help to explain density and how matter behaves when temperature changes. Matter exists in three states: solid, liquid, or gas. The particle model of matter is useful in explaining the differences among solids, liquids, and gases. Illustrations such as these help to clarity the particle theory.
