The current unit of study focuses on these standards:
PS 1-1 Atoms and Molecules Develop models to describe the atomic composition of simple molecules and extended structures. PS1-2 Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred. PS1-5 Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved Click the button to the below to see the resources.
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Check out this intriguing NASA image
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Online Stopwatch (with laps)
Online Stopwatch - simply search Google Stopwatch |