Law of Conservation of Mass

1072 WordsNov 1, 20085 Pages
Title: Law of Conservation of Mass Purpose: The purpose of the Law of conservation of Mass lab is for me to attempt to verify the Law of Conservation of Mass. Procedure: Acid Base Neutralization 1. Using 2 modified, beral pipettes fill pipet an about 1/5 full of white vinegar and pipette B about 1/5 full of 1.0 M NaOh (sodium hydroxide). 2. Place the 2 Pipets on the beam balance and read and record the total mass of the 2 pipets. 3. Carefully telescope the stem of pipet A into the stem of pipette B without spilling any liquid. 4. Mix the solutions by gently squeezing the bulb of pipette A into pipet B. Record any observations. 5. Place the apparatus on the beam balance and record the final…show more content…
The mass difference of the initial and final mass of the Formation of a precipitate is 3/4g. The conclusion that I made was that the Law of Conservation of Mass doesn’t apply when you’re trying to create a precipitate because the solution changes from a liquid to a solid. The mass difference initial and final mass of the Formation of a gas was 0g. The conclusion that I made was that the law of conservation of mass applies when trying to create a gas. 4. The burning of wood and the rusting of iron violates the law of conservation of mass because the result of both is a chemical and physical change. When the substances react their mass shrinks because they’re changing into a new state. Conclusion: During the Law of Conservation of mass Lab I mixed various solutions and observed their chemical and physical change. The chemical change that occurs is the result of a new substance in all three experiments the Acid base Neutralization, Formation of a precipitate and the Formation of a gas. During the lad I learned that when you mix white vinegar with sodium hydroxide the result is a dark pink substance, when lead acetate and potassium iodide it forms a precipitate and water with alka seltzer results in the evaporation of the substance. While doing this lab I was surprised that the precipitate would be powdery and yellow because I thought that it would still be a liquid not powdery.
Open Document