Conservation of Mass Lab

Topics: Intensive and extensive properties, Temperature, Chemical substance Pages: 3 (648 words) Published: April 10, 2011
Conservation of Mass
Block A5


* Baking Soda (NaHCO3)
* Vinegar (acetic acid, CH3COOH, solution)
* Ziploc bags
* Weight boats
* 100mL graduated cylinder
* 150mL beaker
* 400mL beaker
* Balance

The purpose of this lab was to find the mass of the products and reactants and to show a chemical reaction between them. I will use our results to apply what we’re learning in class which consists of: intensive and extensive properties, physical and chemical change, homogeneous and heterogeneous mixtures and the conservation of mass. Thus, we will learn to utilize these scientific applications outside of the actual experiment.

To begin, I prepared a chart to record my data. The activity asked for the mass of all the materials (listed right). We poured small amounts of baking soda into a weight boat until the mass was .5g. Then, we measured 10mL of vinegar into a 100mL graduated cylinder to measure and then into a plastic cup. We measured both of these items on the laboratory balance. Next, we put the vinegar in a Ziploc bag and poured the vinegar in. We observed it and then found the mass again. We then reviewed our recorded data and attempted to design a new experiment to apply what we’ve learned.

| Initial Mass (g)| Final Mass (g)| Change in Mass (g)| Part 1| .5g Baking Soda+3.48 Vinegar=3.98 Total

Observations: Fizzled, bubbles at the top, whitish and then diluted | 3.72 Baking Soda/Vinegar mixture

Observations: Foggy mixture, blended evenly on its own| .26| Part 2| .5 g Baking Soda+3.48 Vinegar=3.98 Total

Observations: Blended, whitish, diluted| 2.93 Baking Soda/ Vinegar mixture

Observations: Foggy mixture, attempted to blend uniformly| 1.05|

The conservation of mass is the law that states that mass is neither created nor destroyed. This is true concerning our lab, despite the decrease in mass. The mass that is no longer present in the substance is in the result of the...
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