Periodic Trends Are Specific Patterns That Are Present

For the lesson observed the objectives was to explain the trends of the periodic table based on the elements’ valence electrons and atomic numbers. Additionally, students were responsible for applying their previous knowledge in calculating subatomic particles to review the Bohr Models and discus the relationship among families in the periodic table. Students will use the information from today’s lesson to make future judgments on reactivity and bonding created during chemical reactions in the next unit. Lastly, students were to connect the information on elemental properties to previous experiences with their health, commercial products, and everyday life.

The students created a macroscopic, three-dimensional (3D) model of several properties of the periodic table. They explained in their own words the following terms: atomic radii, ionic radii, first ionization energy, and electronegativity. Lastly, they identified, described, and explained the patterns observed in the 3D periodic tables for the following element properties: atomic radii, ionic radii, first ionization energy, and electronegativity.

There are 3 quasi trends which are boiling point, melting point, and density and 3 periodic trends which are atomic mass, high specific heat, and electronegativity. The trends that are periodic increase or decrease as they go up or down the group or period. The quasi trends have regular and irregular trends which in one group it could increase or decrease and have a another group that has an irregular trend that in a group can increase and decrease.

As more electrons are added the distance will increase which cause atomic radius to change.

An elements¡¦ reaction to certain substances may be predicted by its placement on the Periodic Table of Elements. Across a period, an element on the left will react with more vigor than one on the right, of the same period. Vertically, as elements are sectioned into groups, the reaction of each element increases

-Covalent bond- Electrons are shared between two atoms, neither atom completely gains or loses electrons. Between two nonmetals.

To learn about the trends of the properties of elements in the periodic table (periodic trends)

The book Napoleon’s buttons was an informative story that mixed slow and confusing chemistry with history. This mix allowed a history buff like me to get involved with the chemical make up and structure of common elements. Penny Le Couteur and Jay Burreson used this book to explain their theories on how key historical events are related to the chemical make up of important elements. In essay after essay they explain the history and events. In addition, they go further in depth to explain the details of particular elements and why they are important. The historical aspects of this book are what grabbed my attention. The long string of facts otherwise would have been too confusing for even the smartest of readers.

Chapter 12 of Kean’s bestseller focuses on how politics had a major influence on the development of the periodic table. The majority of the chapter takes place during the mid-1900s and therefore, as one might

Nonmetallic properties tend to predominate for elements at the far right portion of the table.

In this lab, students compared the periodic trends of the elements in comparison to the atomic number. A periodic trend is the tendency of certain properties of the elements to increase or decrease as one progresses along a row or column of the periodic table. The periodic table is arranged in such a way that these trends are easy to compare, which is the purpose of this lab. One trend, for example, is between the electronegativity and the atomic number on an element, another being the density. When comparing the trends, notice that electronegativity decreases when going down the groups, or columns, of the period table, whereas the density increases.

The energy levels for electrons occur at specific levels for a specific element. Electrons cannot exist between energy levels,

Periodic Table and Periodic Law Experiment Date: March 16, 2017 20170004 강동현 Co-worker: 박정언 Introduction In 1869, Dmitri Mendeleev and Lother Meyer separately made the periodic table, which showed that the properties of chemicals recur periodically. However, both periodic tables sorted the elements in order of increasing atomic mass.

3. How the Periodic Table of Pokemons show periodicity, or the trends occurring, are through the rows and columns. For the columns, from up to down, the Pokemons will increase in. Whereas they get heavier from left to right for the rows. Because of this the trend is as the table goes to right, the Pokemon get heavier and as the table progressively goes down, they get heavier. Basically the closer the Pokemons are to the top left corner, the lighter and shorter they are and vise

In conclusion, the periodic table has gone through several stages before it was even established. There many contributors to it, and they all were the reason why the periodic table is the way it is today. The periodic table has been changed multiple times because of new discoveries, and or the adding of the new elements that were found. It provides us with lots of information, and it helps students anywhere from primary school to college in their science