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 activity students identify forms and changes 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.