I do this by filling out a paper on the projected document camera so students can see how I choose a color and then write in the information for atomic radius for each of the provided elements. Using the scale factor, measure the straw and cut it to the appropriate size. For additional information on how I use partner appointments in my classroom please look at the The questions for trends are tricky and a lot of students want to just right the trend, but not explain why the trend occurs. To begin the lesson I have students begin to figure out the trends for ionization energy, electronegativity, and atomic radius through an inquiry activity. This is a of the answer key for the first section with how I added in partner appointments at the top and the questions I had students perform with their partners. Exploring Periodic Data Showing top 8 worksheets in the category - Exploring Periodic Data.
Use data from your lab to support your answer. If students do not complete the second half I have them complete for homework. I begin the lesson by going over effective nuclear charge slides 6-9 as this is an important aspect of the trends. Create a hypothesis to explain your observations. The Periodic Table and Periodic Law. Assign supplemental problems to prepare students for the test. I did this because I could tell that after doing the trends activity and notes that students needed to get up and move around a bit.
Some of the worksheets displayed are Lesson plan exploring periodic trends, Word search science chapter 5 periodic table pdf, Graphing periodic trends lab answers, Exploring periodic trends graphing lab activity answers, Algebra 2 exploring periodic data answers, Chapter 6 periodic functions, Algebra 2 common core, Periodic trends atomic radius name. Recommended software downloads: Below are links to general freeware programs that I highly recommend for learning chemistry. How well do your predictions match the actual values? These atoms retain their identity in chemical reactions. Teacher Notes The tables and graphs needed for this activity can usually be found in a chemistry textbook Lesson In this activity, you will discover the periodic trends of atomic radius, ionization energy, and electron affinity. Chemistry: Matter and Change i Chapter 6. Find just about any type of periodic table you want in pdf form to print for your students at TheScience Geek's site. Within this lesson there are no additional resources needed.
Because I did not initially make the worksheet as a partner practice paper I had students write 1-4 at the top of their paper and find partners. I then go into the three major trends for atomic radius, ionization energy, and electronegativity with students filling out information in a table on their graphic organizer. My goal is for students to learn what the trends are but also understand why the trends occur. In this experiment, you will explore these trends in reactivity for the elements. To help students I continuously remind them to look back at their notes for help with the rationale for the trend.
This is the for expected answers. Trace the development and identify key features of the periodic table. In this section of the lesson I go through the trends with students. In Greek, the prefix 'di-' means 'two. Draw two color coded arrows for each of the trends you investigated showing the direction in periods and in rows the values increase. To reinforce the trends I have students perform a.
List and describe any unifying ideas you can use to explain all of the periodic trends. Periodic Table Practice Fill in the table below with the correct. Materials: For this lab you will need a sheet with 3 small periodic tables, straws, scissors, a metric ruler, your notebook and access to a hot glue gun. How does the increase in ionization energy compare to other increases? The lesson begins on slide 6 of the and students fill in their while I present the information. Everyone should have their own answers! Periodic Trends: Straw Project Purpose: To create a visual representation of the following periodic trends: atomic size and ionization energy.
. Check the actual values using the interactive periodic table. For the second section of the worksheet students first fill in various elements on a blank periodic table and then compare the various elements to each other using the trends. For example on the second worksheet for question letter e, some students would just write that Cesium has the lowest ionization energy because it is at the bottom left of the Periodic Table, and not explain that the ionization energy is so low because the atom is so big that the outermost electron is very far from the nucleus and thus requires less energy to remove than does the outermost electron in a smaller atom. For example for atomic size on slide 11 students will say that size decreases across periods and increases down groups. Keep looking up values until you think you have enough information to answer questions two through six. For the first section students explain characteristics of the trends on the periodic table.
How well do the trends you observed match the graph? After doing the partner practice on the first section students find the second part easier, and I encourage them to try the questions on their own first and then ask their table partners or myself for help if they are stuck. The structure of the periodic table is such that elements with similar properties are aligned vertically in columns. I then stamp the homework for completion during the following class and go over the answers using the The most common mistakes that students made on these worksheets was not explaining why the trend occurs. I also use the analogy of students in a classroom and those closest to the teacher are watched more closely. Within this unit students already learned about electronegativity in terms of bonding types in. I then assigned them questions to work on with their partners.
Use a different color straw for metals, nonmetals and metalloids. Describe how the first, second, and third ionization energies compare to one another. This year I decided to have students do the first section of the worksheet with partners. Defend your categorization with evidence. Atomic Radius: The radius of the following atoms has been estimated to have the following values: Name Symbol Atomic Number Size of Radius nm Calculated Straw Length cm Fluorine Chlorine Bromine Iodine Etc. I also walk around to ensure that they are remaining on task and understanding the trends. Atomic Radius: the size of an atom measured in either nanometers nm or angstroms Ǻ.