In this lesson, students learn the meaning of the term element and discover that all elements on Earth were formed in stars. They examine the structure of atoms and discover that scientists' understanding of this structure has changed over time--and will likely be refined even further. Lastly, they begin to explore the sometimes strange arrangement and behavior of electrons and to connect these characteristics to the chemical properties of elements. This activity is the second of three lessons. The first, The Periodic Table of the Elements, explored the origin of the periodic table. The third, Repeating Patterns: The Shape of the Periodic Table, shows how quantum electron structure determines the arrangement of elements in the periodic table.
This lesson--the third in a series of three lesson plans about the Periodic Table of Elements--explains why the elements exhibit periodicity, why the periodic table of elements is shaped the way it is, and how we are able to predict the characteristics of elements yet to be discovered or created. Students create electron configuration diagrams that describe the arrangement of electrons around the nucleus. This lesson is the third of three lessons and is intended as an enhancement activity following the completion of the first two lessons. The first lesson, The Periodic Table of the Elements, explored the origin of the periodic table. The second lesson, The Strange World of the Electron, described the structure of the atom.
The periodic table is an essential part of any chemistry course. Its simple chart-like appearance belies the wealth of information that it contains. In this lesson, students learn about the origin of the modern periodic table of elements and explore an interactive version that teaches them how to extract information from it. This activity is the first of three lessons. The Strange World of the Electron and Repeating Patterns: The Shape of the Periodic Table will help to further students' understanding of this powerful tool.
An atom is a tiny particle in matter, and atoms are made of protons, neutrons, and electrons. Some matter, like your body or your book, is made of lots of different kinds of atoms, but elements are made up of only one kind of atom.
The classroom resource provides a video that will explain atoms and how they are made of smaller particles called protons, electrons, and neutrons. This resource can provide background information for students before they construct their own models and/or carry out their own investigations. There is also a short test that can be used to assess students' understanding.
The periodic table is a chart that scientists use to organize the elements. The chart shows each element's name and symbol, the number of protons in its nucleus, and its characteristics. The elements are listed in order by atomic number.
The classroom resource provides a video that will introduce students to the elements organized by the periodic table. This resource can provide background information for students before they create their own models. There is also a short test that can be used to assess students' understanding.