Projet

Project 3

Evaluation 33

Chemistry 1 (SCIH 031 062)

Be sure to include ALL pages of this project (including the directions and the assignment) when you send the project to your teacher for grading. Don’t forget to put your name and I.D. number at the top of this page!

This project will count for 6% of your overall grade for this course. Be sure to read all the instructions and assemble all the necessary materials before you begin. You will need to print this document and complete it on paper. Feel free to attach extra pages if you need them.

When you have completed this project you may submit it electronically through the online course management system by scanning the pages into either .pdf (Portable Document Format), or .doc (Microsoft Word document) format. If you scan your project as images, embed them in a Word document in .gif image format. Using .gif images that are smaller than 8 x 10 inches, or 600 x 800 pixels, will help ensure that the project is small enough to upload. Remember that a file that is larger than 5,000 K will NOT go through the online system. Make sure your pages are legible before you upload them.** Check the instructions in the online course for more information.

Project 3- Periodic Trends in Ionic Radii

Purpose: Is for students to use a graph to identify periods and group trends and to emphasize and illustrate trends in the periodic table.

Laboratory Materials List

The Projects in this course require special materials. All of the materials for this lab will need to be provided by you, the student. Before doing a project, gather all the items you will need for that specific project and out them on a clear workspace.

Student Will Supply

graph paper

pencil

Part A – Procedure (possible 15 points)

Do the Quick Lab on page 180 in your textbook. Follow the steps for the Activity; use the table below to record your data presented in Figure 6.23 to plot ionic radius versus atomic number. Make sure to complete the table displaying all 42 elements listed on page 180 in your textbook. Make sure all points are connected with one single line. See an example of this on page 178 in your textbook.

Part B – Analyze (possible 35 points)

Using your data from Part A – Procedure; record the answers to the following questions 1-5 on page 180 under the “Analyze and Conclude” section. Be sure to show all calculations and units of measurements in your responses.

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This project can be submitted electronically. Check the Project page under “My Work” in the UNHS online course management system or your enrollment information with your print materials for more detailed instructions.