Although most students seem to be dedicated to their studies, the class will need to work on how to apply the information found on the periodic table to identify unknown elements which will serve as a growth target for the future. In this lesson students learn about the trends of the Periodic Table by doing an inquiry activity, taking notes, watching videos, and doing practice questions. For advanced students, or as an extra challenge, you could first have students attempt to find mistakes without a correct periodic table for comparison. This is a great opportunity for you to use your most haunted teacher-voice and read the introduction to set the tone for this heart-pounding adventure! The lesson begins on slide 6 of the and students fill in their while I present the information. 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. 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. Your job is to arrange the sketches in a pattern so that you can draw the missing secret agent.
This is a hands-on inquiry-based activity for which students are introduced by an engaging prompt: You have been chosen for this top secret mission. The number of arms represents the number of electron shells, the number of antennae represents the number of valence electrons, the number of fingers represents the atomic number. For example for atomic size on slide 11 students will say that size decreases across periods and increases down groups. This is the for expected answers. The patterns are very obvious… the challenge would be for them to construct the table with the alien people… but once they do, they can figure out the missing guy! 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.
For the first section students explain characteristics of the trends on the periodic table. These patterns are synonymous with the major patterns on the Periodic Table itself— the number of electron shells increases moving down a column, the number of valence electrons increases moving from left to right across a row, the electronegativity increases moving from left to right across the main group elements, etc. If time allows, the class will participate in a whole-group review of the Student Collaboration In Action: This student rushed to finish in the time she was provided in class and in doing so misidentified many of the elements and left a few questions blank. I begin the lesson by going over effective nuclear charge slides 6-9 as this is an important aspect of the trends. They are part of a family of secret agents, but the most deadly of all has never been sketched. In this section of the lesson I go through the trends with students.
. Names of groups in the periodic table 4. A brief analysis of the student work for this activity reveals that the a majority of the students are able to use the periodic table to determine the number of protons, neutrons, electrons, chemical symbol, and atomic mass. Students are given a copy of the , as well as the As students read the worksheet, they are magically transported to Dmitri Mendeleev's castle in the year 1871. In the table below identify the atomic number of the element related to the mistake, and then briefly describe the mistake. 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. Mendeleev's Castle is set up so that each of the 18 rooms are composed of one of the first 18 elements of the periodic table, but keep in mind that they are not in numerical order! My goal is for students to learn what the trends are but also understand why the trends occur.
I have created a lot of resources around the Periodic Table because as a young student I never really appreciated its usefulness. Students will be tasked with comparing the Periodic Table of Mistakes to a real periodic table in order to determine what mistakes are present. I then assigned them questions to work on with their partners. This concept and much more will be found in the. How 'group number' relates to outer shell electrons 3. I also walk around to ensure that they are remaining on task and understanding the trends.
A perfect example of why students need to hear the directions multiple times to ensure they have a clear understanding of the activity's expectations. To begin the lesson I have students begin to figure out the trends for ionization energy, electronegativity, and atomic radius through an inquiry activity. 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. Within this unit students already learned about electronegativity in terms of bonding types in. These patterns include the body size skinny to fat , the number of antennae 1 to 8 , the number of fingers 1 to 18 , the number of arms 1 to 3 , the facial expression really sad to super happy , and the body design pattern 9 different ones. Then students should be given some time to find the mistakes, while comparing the tables. This Periodic People Activity, including the people cards, teacher notes and table answer key, are located on the page! The meaning of 'group number' and how this relates to reactivity trends 2.
This activity was adapted from the Oakland Schools Chemistry Resource Unit. Students will complete the to practice their utilization of the periodic table by calculating the number of protons, neutrons, and electrons. The worksheet contains two sections. A fun, clear, comprehensive and varied worksheet that works well as starter, plenary or as a chunk of the main body of lesson. Somewhere along the way, I found the cutest set of these that had been re-drawn by an artist named Renee Kimpel. Unfortunately, I have not been able to find Renee and her blog again to give her proper credit if you do know about this blog or where the re-drawn Periodic People can be found, please leave this in the comment section below! If students do not complete the second half I have them complete for homework. Students will have five minutes to record their responses and then share with their neighbor.
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. The next step in our scaffolding of curriculum is to apply this knowledge in order to predict the type and number of chemical bonds each element will create most often. This year I decided to have students do the first section of the worksheet with partners. Through college and grad school, I really did. Great for peer or self-assessment. Students will record the clues for each room and the identification of the room's element on their Students will utilize the , their from a , and their supportive lab partner students to maneuver through each room of the castle as they attempt to escape Mendeleev's mystical spell and return safely back to the classroom! To help students I continuously remind them to look back at their notes for help with the rationale for the trend. Students will complete their Independent Practice activity as homework.
Similarities in reactivity between elements 5. Another example of an alternative student strategy to complete their work and the constant reminder that students usually need more time than they are given for collaborative activities. At the conclusion of the activity, students will review their responses with their neighbor to check for accuracy. Student volunteers will have the opportunity to share their experiences with the class in a short whole-group review discussion. Use a correct version of the periodic table for comparison and to help you determine where the mistakes are located.
The castle is also arranged so that the first floor represents the first period of the periodic table, the second floor represents the second period, and the same for the third period the physical structure of the castle is not realistic, but the activity does a good job guiding students through the periodic table. To use an analogy I talk about Tommy the Trojan our school mascot and how his charm is the effective nuclear charge with those students closest to him being most effected by his charm. I also use the analogy of students in a classroom and those closest to the teacher are watched more closely. Within this lesson there are no additional resources needed. Summary In this activity, students will examine a periodic table that contains 25 mistakes.