HS-PS1-2: Predicting Reactions based on Valence Electrons
Construct explanations for simple chemical reactions by analyzing the outermost electron states of atoms and their trends in the periodic table.
1. Select Reactants
Click to add atoms to the reaction chamber.
Alkali Metals (Group 1)
Halogens (Group 17)
Other Nonmetals
2. Reaction Chamber
Add elements from the left panel.
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Scientific Explanation
Add reactants and click "Predict Outcome" to see how the valence electrons dictate the chemical reaction. Atoms tend to react in ways that give them a full outer electron shell (octet rule), determining the patterns of chemical properties we observe in the periodic table.