PPT-Atoms, Bonding, and the Periodic Table

Valence Electrons and Bonding The number of valence electrons electrons in the outermost energy level in an atom of an element determines many properties of that element including the ways in which the atom can bond with other atoms. History. Dmitri Mendeleev. (1834 – 1907). Russian chemist. Noticed regular (periodic) recurrence of chemical and physical properties after arranging by increasing atomic mass.. Eventually led to grouping by similar properties side by side. Collin College. Lecture Presentation. Chapter . 2_3. Atoms and Elements. Periodic Table. Each element is identified by a unique atomic number and with a unique . chemical symbol.. The chemical symbol is either a one- or two-letter abbreviation listed directly below its atomic number on the periodic table.. Physical Science 115. 1. Atoms—The Building Block of Matter. The atom is the fundamental . building block of matter.. 2. History of Atomic Structure. Democritus (ancient Greek philosopher)-first proposed idea of atoms. If we can’t see the electron, and it has no mass, then why is it important?. BONDING!. Electrons are the only particle that participate in bonding between atoms.. How do we know when and how things will bond, though?. Higher Supported Study - Week 2 . Key Areas – Periodic Trends . The trends in . covalent radius . across periods and down groups.. The trends in . ionisation energies . across periods and down groups. . : . Organization . of . the Periodic . Table. Jodye Selco. , . jiselco@csupomona.edu. Center for Excellence in Mathematics and Science Teaching (CEMaST),. . Cal Poly Pomona. Mary Bruno. and . Sue Chan. How do solar systems form?. B. Stellar Nurseries . C. A. How did the solar system form?. Astro. Comics Presents…. Long ago…. Nebula. Hmm…I am just moving around randomly.. Before Planets. A nebula is a cloud of dust and gas in space.. 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. . 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.. S8P1e. . Develop models by analyzing patterns within the periodic table that illustrate structure, composition and characteristics of atoms.. Copy This! . name #_______. date_______. . ____________. Block #___. A test of a hypothesis under conditions established by a scientist is called a. The Periodic Table Ms. Pici 2016-2017 The Periodic Table Lay out 2-28-16 Take out periodic table basics and white paper You will need scissors, a glue stick, and colored pencils Use an Analogy Calendar like the Periodic Table Atoms, Elements, & the Periodic Table Earth Science Intro Unit What is an Atom? Atom S mallest particle into which an element can be divided and still be the same element Building blocks of matter. Atoms and the Periodic Table Atomic Structure ATOM: the smallest particle that has the properties of an element. From the early Greek concept of the atom to the modern atomic theory, scientists have built on and modified existing models of the atom.