Solubility and Concentration - A Free Virtual Chemistry Lab Activity
As cases due to COVID-19 continue to rise , many schools remain locked in virtual learning formats. Consequently, meaningful laboratory work remains a challenge for many. This semester, I started creating my own virtual chemistry laboratory activities for my high school chemistry course.
In this activity, students learn about solubility and concentration. In section 1, students answer questions from a video that explains the dissolving process and how to calculate the molarity of a solution. In section 2, students answer questions from a video that explains supersaturation and how to make rock candy from a supersaturated solution of sugar and water. Then, they use a PhET simulation to explore factors that affect the concentration of a solution. Finally, in section 3, instructions are included so that students can try making their own rock candy at home.
This activity can be completed in one 50 minute class period. The extension "at home" section would require about 60 more minutes.
Section 1 and 2 only require YouTube videos and the PhET simulation, " Concentration ", Section 3 (at-home investigation) requires 2 cups of tap water, 6 cups of granulated sugar, wooden skewers, clothes pins, large glass mason jar, pot for boiling water.
Section 1 - Dissolving and Concentration
The activity begins with a short video (video 1) that introduces the dissolving process. This video explains how certain substances dissolve in water, defining terms like solute, solvent, and solution. Additionally, students learn and practice calculating the molar concentration of a solution.
How does dissolving work? (& molarity)
Video 1: How does dissolving work? (link is external) on the Science Classroom (link is external) YouTube Channel (Published 10/20/2020)
Section 2 - Factors that Affect Concentration
Once again, students watch a short video (video 2) that introduces factors that affect concentration. Specifically, this video describes the relationship between the temperature of a solution and the solubility of a solid. The video also demonstrates how this knowledge can make rock candy from a supersaturated sugar and water solution. After the video, students use the PhET simulation, Concentration (PhET Interactive Simulations at University of Colorado Boulder, under the CC-BY 4.0 license, to explore other factors that affect concentration.
Supersaturated Sugar Solution!
Video 2: Supersaturated Sugar Solution (link is external) on The Science Classroom (link is external) YouTube Channel (Published 10/23/2020).
Section 3 - Try it at Home
The final, optional section of the lab provides instructions for students to make their own rock candy (image 1). The procedure is simple enough that they can perform it in their kitchen at home.
Image 1: Rock candy produced according to the instruction in section 3.
Students work through the Virtual Lab Activity: Solubility and Concentration assignment document (found in the Supporting Information) as described below (image 2). log into your ChemEd X account for access. The document includes all of the required links to videos and PhET simulations.
Image 2: Example of questions in the student document (available in the Supporting Information).
The student document, including questions, can be found in the Supporting Information below. Log into your ChemEd X account for access.
No teacher preparation is required unless completing the "at home" portion as a demonstration for students.
YouTube Channel: The Science Classroom . & PhET Simulations
General Safety
For Laboratory Work: Please refer to the ACS Guidelines for Chemical Laboratory Safety in Secondary Schools (2016) .
For Demonstrations: Please refer to the ACS Division of Chemical Education Safety Guidelines for Chemical Demonstrations .
Other Safety resources
RAMP : Recognize hazards; Assess the risks of hazards; Minimize the risks of hazards; Prepare for emergencies
IMAGES
VIDEO
COMMENTS
Study with Quizlet and memorize flashcards containing terms like To test the hypothesis above, you changed the _____of the solvent and measured the _____of a solid., Therefore, the independent variable was_____and the dependent variable was_____., The results of this lab experiment_____the hypothesis. and more. ... Lab: Solubility Assignment ...
Add the sugar after heating the mixture. Fact 1: Dissolved oxygen is one of the most important nutrients needed by fish in the aquatic environment to survive. Fact 2: Unlike solids, whose solubility increases with increasing temperature, the solubility of gases generally decreases with increasing temperature.
In each measurement you mix known masses of the salt and the water. Problem 1: Figure 2.2.2 2.2. 2 (a) is reading the temperature of a saturated solution, the problem is we do not know the concentration of the salt that dissolved. That is, the total salt added is the mass of the salt dissolved and the mass of the precipitate.
Fill out all fields. Paste a copy of the graphs on the Graph tab into the blue frame. Data Tab. Transfer data from data sheet in lab to the orange cells. Give results of all calculations in blue cells. You must put your answers in the indicated cells as the grade book pulls your data from those cells. Do not put any units in the number cells ...
ADAPT 2.4.2 2.4. 2. PART II - Instructor Graded. Virtual Lab. In this virtual lab you will determine the solubility of an unknown compound at several different temperatures and then plot the solubility as a function of the temperature with Excel or an equivalent type of software. Once you have completed the graph you will compare it to a series ...
Students work through the Virtual Lab Activity: Solubility and Concentration assignment document (found in the Supporting Information) as described below (image 2). log into your ChemEd X account for access. The document includes all of the required links to videos and PhET simulations. Image 2: Example of questions in the student document ...
Lab: Solubility Student Guide Pre-Lab Information. Purpose Explore the relationship between temperature and solubility using a laboratory procedure. Time Approximately 45 minutes. ... Assignment 2R - EL5733 - it will help you. Environmental Science 100% (21) 4. Natural Selection Gizmos Lab.
Lab Report Title: Solubitity Purpose: To explore the relationship between temperature and solubility using a laboratory procedure. Introduction: This experiment is being conducted so we can see a substance holds more or less solute depending on a change in temperature.
Solubility Lab Report. Nicholas Munoz P Edgenuity. Purpose To explore the relationship between temperature and solubility using a laboratory procedure. Hypothesis If the temperature of the liquid is increased, then more sugar will dissolve, because warm solutions hold more solute than cold solutions.
Submit the URL of your workbook to your instructor using the form in Table 2.3.1 2.3. 1 (link above) Complete the Google Workbook as outlined in the Data Analysis section of the lab. Convert your Workbook to a PDF (convert entire workbook, not just coverpage) Upload the PDF version of the workbook to the ADAPT system before the lab deadline in ...
MiSP Solubility Lab L1 2 Collect Data Within your group assign one person to add and stir the salt and one person to add and stir the sugar, one timer and one data recorder. Salt Add 1 gram of salt to the beaker of water. Start the timer and begin stirring immediately. Watch the solution. When all of the salt appears to
Quizlet has study tools to help you learn anything. Improve your grades and reach your goals with flashcards, practice tests and expert-written solutions today. ... 1 / 10 Lab: Solubility Assignment: Reflect on the Lab. Log in. Sign up. Get a hint. To test the hypothesis above, you changed the _____of the solvent and measured the _____of a ...
Chemistry questions and answers. Experiment 34: Prelab Assignment (Attachment: Expanded Solubility Rules) This pre-lab assignment is worth 50 points toward your lab average In this lab, you will test for each of the ions listed across the top of the table below. You w for them by observing whether they precipitate (form a solid) with each of ...
Determination of a Solubility Product Constant CHEM 1412 - 570. April 13, 2017. Amanda Puype Ranee Miller Mary Roberts Ashlyn Terpstra. Introduction The purpose of this experiment is to determine the Ksp, or "the equilibrium constant for a solid substance dissolving in an aqueous solution", of Ca(OH) 2 by calculating the concentrations of Ca2+ and OH- ( 1 ).
In this virtual lab you will determine the solubility of an unknown compound at several different temperatures and then plot the solubility as a function of the temperature. You should do post lab questions 2.4b. 3 2.4 b. 3 and 2.4b. 4 2.4 b. 4 before doing this activity. This is an instructor graded assignment, and the last submission will be ...
lab report solubility lab report serenity landon information: purpose: explore the relationship between temperature and solubility using laboratory procedure. Skip to document. ... 2.05 chem - assignment; Star Spectra SE - mmmmmm; Related documents. Menu dia 6 oct - Somewhere over the rainbow, there are notes. but in this case you have in your ...
Lab 8 Assignment. Solubility (Fill in the blank/Short answer) (See CHM 1010 for Solubility Course Material) Henry's law states that the solubility of a gas in a liquid is proportional to the _____. Partial pressure in the gas. Describe two ways to increase the solubility of gaseous CO 2 in water?
Quizlet has study tools to help you learn anything. Improve your grades and reach your goals with flashcards, practice tests and expert-written solutions today. Flashcards. 1 / 7 Lab: Solubility Assignment: Reflect on the Lab. Log in. Sign up. To test the hypothesis above, you changed the... of the solvent and measured the... of a solid.