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The goal of today's collaborative lab is to work together to learn about reaction rates. Ultimately, the goal is to answer the question, "How can we speed up or slow down chemical reactions?"

Follow the instructions at your station and then post a summary to the Padlet. Your summary should include the following.

1) The title for your station

2) A concise description of your procedure

3) Thorough data and analysis

4) Video/photos to support your findings (Hint: when uploading media, take the photo/video using the camera, then import it from the camera roll. It kept crashing on me when I tried recording a video directly into the padlet post.)

For more detailed information, see the rubric post.

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Here is the rubric I will use to assess your lab performance.

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Instructions & Analysis ?'s

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Instructions & Analysis ?'s

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Instructions & Analysis ?'s

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Instructions & Analysis ?'s

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Instructions & Analysis ?'s

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Instructions & Analysis ?'s

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Magnesium ribbon reacting with .1 M HCL. Little to no react

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Magnesium ribbon reacting with 1 M HCL . Moderate reaction (10x more than .1)

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Magnesium ribbon reacting with 6 M HCL. Most reactive (10x more than 1 / 60x more than .1)

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The test tubes are reacting from the fastest reactants to the slowest. The second fastest reactant test tube had potassium iodide and hydrogen peroxide. The first fastest had yeast and potassium iodide and the slowest had just hydrogen peroxide.

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CaCO3 reacting with HCl
A chunk of CaCO3 does not react while CaCO3 as a powder does react to the HCl

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In one beaker, at room temperature, we dissolved one Alka-Seltzer tablet. It took 47.31 seconds to dissolve. In another beaker, at 35 degrees Celsius, we dissolved another tablet. It took 26.40 seconds to dissolve.
Room Temperature

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Station F temperature effect Hayden and Thad

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Station F temperature effect Hayden and Thad

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35 Degrees Celsius

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The added 2-3 drops of lemon juice to 3 apple slices and left 3 slices without lemon juice

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In one beaker we had room temperature water which was 21 degrees Celsius. In the other beaker we had refrigerated water which was 18 degrees Celsius. We then dropped an Alka-Seltzer tablet into each beaker. In the room temperature beaker the tablet dissolved in 54 seconds. In the refrigerated beaker, the tablet dissolved in 47 seconds. We determined that the colder the water, the quicker it takes the tablets to dissolve.