The goal of this activity is to develop and use a model to describe that matter is made of particles on a scale that is too small to be seen. You will be making observations of changes supported by a particle model of matter.

In this lesson, students learn how properties of matter for common materials may change when examined at the nanoscale level. Includes student handouts, video resources, and a glossary.

This site helps students construct a model of the arrangement of water molecules when present as solid, liquid or gas. Includes background information, lesson plans, links to standards and assessment ideas.