My Science Box

http://www.newyorkscienceteacher.com/sci/movies/index.php

A great list by subject for videos, including worksheets! The Super Size Me worksheet even has before AND after questions.

Introduction

Performance Tasks:

Closed Chemistry- Design and build a closed structure in which a chemical reaction can occur.  You will present your demonstration to the class providing evidence for conservation of mass.  The presentation should include a poster of the balanced chemical equation for your reaction.

Objective: Observe Evidence of Chemical Reactions

Big Idea Application:
During chemical processes matter can change forms.

The overarching essential questions being considered:
What happens during a chemical reaction?

The essential questions being considered:

Objective:  Conservation of Matter

Big Idea Application:
During ordinary physical or chemical processes matter can neither be created nor destroyed.  It can only change forms.

The overarching essential questions being considered:
What happens during a chemical reaction?

Objective:  Factors that Affect the Rate of a Chemical Reaction

Big Idea Application:
During chemical processes matter can change forms.

The overarching essential questions being considered:
What happens during a chemical reaction?