Visit to Mr. Lynn’s 8th Grade FSI Science Lab

Visit to Mr. Lynn’s 8th Grade FSI Science Lab

8th Grade Science Lab with Mr. Lynn:  Exploring states of matter
8th Grade Science Lab with Mr. Lynn

Learning Target:   I can control the amount of products in a chemical reaction by manipulating the reactants.
Visit to 8th Grade Science Lab
In a recent lab, 8th grade FSI scientists analyzed the chemical equation for the reaction between vinegar (acetic acid solution) and baking soda (sodium bicarbonate). This lab helped them make the connection between the written chemical equation, the molecular model, and the real substances in the reaction. Students were able to see that the gas produced in the actual reaction is also written in the products of the equation. Students also got to experiment by changing the amount of one or more reactants to see how the change affects the amount of products.
The FSI 8th grade scientists explained to me: For a chemical reaction to take place, the bonds between atoms in the reactants are broken, the atoms rearrange, and new bonds between the atoms are formed to make the products. They showed me how count the number of atoms on the reactant side and on the product side of a chemical equation, and explained that the equal number of atoms on each side of the equation shows that mass is conserved during a chemical reaction. They also explained, on the molecular level, why changing the amount of one or more reactants changes the amount of products, and why simply adding more and more of one reactant will eventually not produce additional products.
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