Food calorimetry virtual lab

We did a lab proving the conservation of thermal energy using a calorimeter.

Calorimetry Computer Simulation NEW html5 version

Our objective was that the heat lost by hot water was the heat gained by the cold water. What are the possible sources of it? The easiest error reason is that the calorimeter wasn't a perfect insulator.

This is because you must have opened the calorimeter when you added the cold water. Thus, heat was lost not only to the cold water but to the surrounding environment. Also, you might not have waited long enough for the thermometer to read, so the temperature of the hot water was lower than it really was, or the temperature of the cold water was warmer than it really was.

Another possible source of error is the increase in heat by stirring due to increased kinetic energy. However, only good error sources will explain the direction of the error, so you might want to consider which way more heat or less heat an error source would affect your final result.

Errors in thermometers - esp. Insulation error: If the calorimeter is not properly insulated, heat losses to the surroundings will occur. Measurement error in volume and or weight: The amount of water taken must be measured accurately.

The best way is to repeat the experiment three times and try to eliminate all the sources of error. Our calorimeter lab utilized an aluminum calorimeter cup. The reaction used hydrochloric acid. One of our systematic errors was a result of a reaction between the aluminum cup and hydrochloric acid, which lead to an increase in heat production.

Trending News. Witness to executions hears haunting last words. WH moves Bush, Clinton portraits to disused room. These eateries have filed for bankruptcy, more are at risk. Fox News host praised for correcting Trump over tweet.The heat is calculated from the equation. The unit for c p is thus heat per unit mass per unit temperature. The value of c p does depend on the temperature. However, for the small temperature range we are interested in, it is a good approximation to regard c p as temperature independent.

Historically, heat q was measured in terms of calories. With this definition, the specific heat of water is 1. The use of the calorie began before it was established that heat is a form of energy and 1 calorie is equivalent to 4. The joule J has become the more favored unit in recent years. The specific heat of water is then 4. The purpose of this lab is to apply the experimental methods of calorimetry in the determination of the specific heat of several metals.

This interactive file is Flash-based and will not work in many newer mobile browsers, and some desktop browsers as well.

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Another, older version of this would no longer function at all. PowerPoints Review Calendar. PowerPoints Review Mitosis Lab. Flash simulation produced by Iowa State University. Warning This interactive file is Flash-based and will not work in many newer mobile browsers, and some desktop browsers as well.The "Print" button will print the the contents of the left-scrollable region of this window. This is useful if you have a small screen with no room for both your work area and these instructions.

You will still need this window nearby to click on links and to view the contents of the right-scrollable region. The window on your left with the title bar "Acid Base Titration" contains a device that simulates the titration of a weak acid such as acetic acid.

You don't need to know about the titration of weak acids yet, just follow the steps to see how Virtlab works. The window can be moved by clicking and dragging on it's title bar and resized by clicking and dragging on the small box in its lower-right corner. Windows can overlap. Clicking on the title bar brings a window to the front. Unlike windows in your desktop applications, only the title bar can be used to bring a window to the front!

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The beaker with the rotating stirring rod contains a weak acid. In the "Initialize" panel the textbox adjacent to the label pK specifies a value of 4. The pK of acetic acid is 4. Positioned above the flask is a burette that contains a strong base such as NaOH. Click on the button "? This stopcock is the only hotspot in this simulation. Clicking on the red stopcock delivers a continuous stream of concentrated NaOH to the beaker beneath. Did you see the readout of the pH meter change as NaOH was added to the beaker?

Did you see that the concentrations of acetic acid [HA] and acetate [A] change in the "Calculate" panel? Click on the burette's stopcock briefly and then record the Base Added and pH on a pad of paper. If you have graph paper available, plot Base Added x-axis vs pH y-axis.

Table 1 displays the results we obtained and Figure 1 displays our plot.


Click on the "Table 1" and "Figure 1" hyperlinks to see these results on the right. There is a hyperlink "Laboratory Notebook" near the top right of your screen.Physical Chemistry Virtual Lab Physical chemistry also called physicochemistry is the explanation of macroscopic, microscopic, atomic, subatomic, and particulate phenomena in chemical systems in terms of physical concepts; sometimes using the principles, practices and concepts of physics like thermodynamics, quantum chemistry, statistical mechanics and dynamics.

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This field covers all chemical compounds except the myriad organic compounds carbon based compounds, usually containing C-H bonds. It is the science of sampling, defining, isolatingconcentrating and preserving samples. Organic Chemistry Virtual Lab Organic chemistry is a discipline within chemistry which involves the scientific study of the structure, properties, composition, reactions, and preparation by synthesis or by other means of chemical compounds that contain carbon.

Inorganic Chemistry Virtual Lab Inorganic chemistry is the branch of chemistry concerned with the properties and behavior of inorganic compounds. Advanced Analytical Chemistry Virtual Lab Analytical chemistry is the branch of chemistry concerned with studying the properties of materials and development of tools used to analyze materials.Teachers Pay Teachers is an online marketplace where teachers buy and sell original educational materials.

Are you getting the free resources, updates, and special offers we send out every week in our teacher newsletter? All Categories. Grade Level. Resource Type. Log In Join Us. View Wish List View Cart. Results for calorimetry Sort by: Relevance. You Selected: Keyword calorimetry. Grades PreK. Other Not Grade Specific. Higher Education. Adult Education. Digital All Digital Resources. Made for Google Apps.

Other Digital Resources. English Language Arts. Foreign Language. Social Studies - History. History World History. For All Subject Areas. See All Resource Types. This is a single 2-page worksheet covering specific heat and calorimetry. Answer key is included.

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food calorimetry virtual lab

Students will be able to exp. ScienceChemistryPhysics. Lab Calorimetry of 1 Cheese Puff.

food calorimetry virtual lab

This is the lab I use for the energy unit. Instead of just doing problems, I have students calculate the energy found in 1 cheese puff and have them compare it to the nutrition facts label.To begin this lesson I explain the two virtual labs and go over my expectations for student behavior during the activities.

For more details about how I use computers in chemistry see my reflection in the Elaborate section of my Introduction to Energy Lesson. The first virtual lab that students do in this lesson can be found on Glencoe's website.

food calorimetry virtual lab

This screencast movie shows how students perform the virtual lab by clicking through the procedures, recording, and analyzing their data. For the second activity students perform another set of experiments on the computer, this time using a simulation from the State University of New York's website. This screencast movie explains the virtual lab.

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Empty Layer. Home Professional Learning. BetterLesson reimagines professional learning by personalizing support for educators to support student-centered learning. See what we offer. Sign Up Log In. High School Chemistry Rachel Meisner.

Food Calorimetry

Students will be able to calculate the amount of Calories per gram of different foods and determine the specific heat capacity of various substances through performing two virtual labs. Big Idea Calorimetry experiments allow scientists to determine the Calories per gram of various foods and determine the specific heat capacities of substances.

Lesson Author.

food calorimetry virtual lab

Grade Level. Exothermic Reactions. HS-PS Create a computational model to calculate the change in the energy of one component in a system when the change in energy of the other component s and energy flows in and out of the system are known. HS-PS Plan and conduct an investigation to provide evidence that the transfer of thermal energy when two components of different temperature are combined within a closed system results in a more uniform energy distribution among the components in the system second law of thermodynamics.

It does so because students are utilizing the concept of specific heat and how energy is transferred within systems.

This lesson aligns with the NGSS Science and Engineering Practice 6: Constructing Explanations: It does so because students are expected to explain their observations in the virtual labs.

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Although they are not physically doing the labs, they are able to see how the lab activities work so I feel that it covers this practice. For this lesson students need access to computers or tablets to perform the activities. Explain 5 minutes. I go over a couple particulars for each lab: For the calorimetry lab I tell students to make sure that they are reading each step and that they will not be able to go to the next step until they record in the lab notebook on the computer and press the flashing arrow.

For the Heat Capacity lab I tell students to pay attention to the equation because they are solving for "c" not "q". I also tell them that if they are confused to try to figure out the next step with their groups and that if they are still stuck that they should ask me for clarification right away because they need to make sure to stay on task; otherwise, they will not have enough time to complete the lab.Calorimetry Computer Simulation is used to determine the heat exchanged in a variety of physical and chemical processes.

This computer simulation allows one to select the mass and initial temperature of various substance, mix the substances in a calorimeter, and record the final temperature. Computer animations of the physical process or chemical reaction at the particle level of representation molecular scenes are provided for a select few of the experiments.

Temperature vs. The big idea for all calorimetry processes is energy is conserved. Energy cannot be created or destroyed, but it can be exchanged. Students experience difficulty learning thermochemistry concepts. Learning Objectives. Use experimental data to develop a conceptual understanding of the First Law of Thermodynamics and how to apply it to calorimeter experiments:. Ask a research question and design a series of experiments to provide data to answer the research question.

Use experimental data to develop a relationship among the variables: heat, mass, specific heat, and change in temperature. Identify whether the process is exothermic or endothermic. Identify what gains heat and what loses heat in a calorimetry experiment. For a physical process and for a chemical reaction explain how heat is transferred, released or absorbed, at the molecular level. AP Chem Learning Objectives.

Learning objective 5. Making this computer simulation interactive - active learning. The instructor should "frame" the instructional activity accompanying this computer simulation. There are several calorimetry lecture demonstrations that can be used to accompany this computer simulation. Greenbowe, T. Educ 74 3 By continuing to view the descriptions of the demonstrations you have agreed to the following disclaimer.

The university expressly disclaims all warranties, including the warranties of merchantability, fitness for a particular purpose and non-infringement. The university further disclaims all responsibility for any loss, injury, claim, liability, or damage of any kind resulting from, arising out or or any way related to a any errors in or omissions from this web site and the content, including but not limited to technical inaccuracies and typographical errors, or b your use of this web site and the information contained in this web site The university shall not be liable for any special, direct, indirect, incidental, or consequential damages of any kind whatsoever including, without limitation, attorney's fees in any way due to, resulting from, or arising in connection with the use of or inability to use the web site or the content.

The custom demos section of the website is used by UO chemistry instructors to schedule demonstrations that are not listed in the database.

Do not proceed to schedule a custom demo unless you have already conferred with the lecture demonstrator about it. Skip to main content. UO Home Dept Index. Curriculum Notes. Learning Objectives 1. References 1. Schedule This Demo. Attached Files calorimetry. Please read the following disclaimer carefully By continuing to view the descriptions of the demonstrations you have agreed to the following disclaimer.


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