1 / 7

LAB FACTORS AFFECTING THE RATE OF SOLUBILITY

Learn about factors affecting solubility rates including crushing, stirring, temperature, and pressure. Conduct a lab experiment to test these factors and analyze the results in a detailed write-up format.

edelgado
Download Presentation

LAB FACTORS AFFECTING THE RATE OF SOLUBILITY

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LABFACTORS AFFECTING THE RATE OF SOLUBILITY

  2. Factors That Affect Solubility • Crushing • Increases the amount of exposed surface (the surface area)

  3. Factors That Affect Solubility 2. Stirring • Speeds up the movement of the molecules

  4. Factors That Affect Solubility • Increasing Temperature • Also moves molecules faster and forces them farther apart

  5. Factors That Affect Solubility 4. Increasing Pressure • Increase in Pressure = Increase in Solubility • Specific to gases Like in a soda can—The closed can compress the gas inside and allows the carbonation to mix more readily with the soda. Once the can is opened, the pressure is decreased, the gas begins to escape, until eventually the soda becomes “flat” due to lack of carbonation remaining in the soda.

  6. LAB PROCEDURES • PURPOSE: • Use the materials at your table to design/carry out a simple experiment that will allow you to test one of three factors that affect solubility: temperature, amount of stirring, or particle size. • Try to think outside the box a little bit. • Unacceptable Problem: “How does an increase (decrease) in temperature affect the solubility rate of salt in water?” • WHY?—Because we already know the answer to that! • Hypothesize on specific water/salt amounts or temperatures, etc. and what the difference in their solubility rates might be…

  7. LAB WRITE-UP • Will be attached to Page 72 and is to include: • Problem—Written as a QUESTION. • Hypothesis— “If…, then…” statement • Independent variable is part of the “If” • Dependent variable is part of the “then” • Materials—List them • Procedure—Step by step, specific enough that someone else could repeat what you’ve done • Observations—In a data table, showing three trials • Analysis—List controls and variables and create a graph to display the data recorded in your table • Conclusion—Was your hypothesis supported? Why/why not? Summarize your findings in complete sentences—at least 5 sentences.

More Related