PPT-Periodic Trends Chemistry

. Other. 100. 200. 300. 400. He Discovered the .. . Answer. Question. Answer-The Periodic Table. Answer. Home Page. Question. What town did he die in?. Answer . . 9/8/15. Elements come in different sizes. Which do you think is the biggest and why?. Objective . Tonight’s Homework. To determine which element is the biggest . none. Trends in the Periodic Table. Trends and Similarities. Trends of the Periodic Table:. At the conclusion of our time together, you should be able to:. . Give a trend across and down the Periodic Table for metallic characteristics, reactivity, atomic radius and ion radius, . Ga. . Standards. Students know . how to use the periodic table to identify . trends . in ionization energy, . electronegativity. , and the relative sizes of ions and atoms.. Definition: Half . of the distance between . The student will investigate and understand that the placement of elements on the periodic table is a function of their atomic structure. The periodic table is a tool used for the investigations.. Key Concepts:. Elemental Properties and Patterns. The Periodic Law. Dimitri. Mendeleev (1869/1871) was the first scientist to publish an organized periodic table of the known elements.. He was taking a chemistry course in Russia and tried to find a way to organize the periodic table. . Periodic Table. Periodicity:. regular variations (or patterns) of properties with increasing atomic weight. Both chemical and physical properties vary in a periodic (repeating pattern).. Group:. vertical column of elements (“family”). Roy Kennedy. Massachusetts Bay Community College. Wellesley Hills, MA. Chemistry: A Molecular Approach. , 2nd Ed.. Nivaldo Tro. Nerve Transmission. Movement of ions across cell membranes is the basis for the transmission of nerve signals. Periodic table. Elements are arranged based on similarities in their properties. Dmitri Mendeleev is credited with our current periodic table. Even predicted the existence of elements that were not yet discovered(i.e. Gallium). What patterns exist on the periodic table?. Lesson Essential Question:. The Basics. The Basics. Metals, Nonmetals, Metalloids. There is a zig-zag or staircase line that divides the table.. Metals are on the left of the line, in . Law. Geneva High School. Section 5-1 History of the Periodic Table.  By 1860, more than 60 elements had been discovered, yet chemists had no way of organizing them or agreeing on basic properties of the element.. Section 1. Development of the Modern Periodic Table. The periodic table evolved over time as scientists discovered more useful ways to compare and organize the elements.. Section 1: . Development of the Modern Periodic Table. m. etal. nonmetal. metalloid. malleable. ductile. atomic . radius. electronegativity. ionization energy. shielding. “Wolfram”, . Viza. . Arlington, 2010. Trend. What is a trend?. a pattern or direction. history. A 100,000-year-old ochre-processing workshop was found at . Blombos. Cave in South Africa. It indicates that early humans had an elementary knowledge of chemistry. Paintings drawn by early humans consisting of early humans mixing animal blood with other liquids found on cave walls also indicate a small knowledge of chemistry.