Our World: Melting and Freezing

Published on August 7, 2020 by

Atoms and molecules make up matter. That matter comes in three forms, or states of matter: solid, liquid, and gas. In this video, discover how different temperatures can transform atoms and molecules into entirely new states of matter!”

This video satisfies the 2-PS1-4 requirement for second grade proficiency.

Students who demonstrate understanding can:

2-PS1-4. Construct an argument with evidence that some changes caused by heating or cooling can be reversed and some cannot.

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