The Law of Conservation of Mass

Did you know that matter cannot be created nor destroyed?

This is called the Law of Conservation of Mass. Sometimes matter may seem to disappear, but when you look closely, you learn that it cannot just disappear into thin air.

Chemical reactions will always balance out in a closed system where nothing is removed.  Have you ever made a baking soda and vinegar volcano eruption? Combining the baking soda and vinegar creates a chemical reaction and it’s pretty fun to watch.
Chemical equations represent these reactions and when you look at chemical equations and how the chemical reaction played out, you can see that everything is still there, just maybe a little rearranged.
Here’s the chemical equation for the vinegar and baking soda combining.

Vinegar + Baking Soda → Sodium acetate + water + carbon dioxide

C2H4O2  +   NaHCO3    →      NaC2H3O2      +  H2O   + CO2
Can you see how even though there was change, everything it still there? This is the Law of Conservation of Mass.
Chemical reactions can appear a little daunting to analyze. This video shows a simpler demonstration of the Law of Conservation of Mass.

Here are some more science experiments to help you learn about the Law of Conservation of Mass from the Utah Educational Network website.

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