PPT-Chapter 5 Electrons in Atoms

51 Light amp Quantized Energy Wrapped Box PURPOSE Make observations using all the senses except sight PROCEDURE Read and complete the lab safety form Obtain a wrapped box from your instructor. 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?. Chapter Big Idea . The atoms of each element have a unique arrangement of electrons.. Section 1: Light and Quantized Energy. Essential Questions & Vocabulary. How do the wave and particle natures of light compare?. Matter takes many forms in nature. : In this chapter, we are going to learn to distinguish the type of compound that we have already studied, the “. ionic. . compound. ” (which contains oppositely-charged particles: metal . Atoms are composed of protons, neutrons and electrons. These subatomic particles are charged….. Atoms make elements… Elements can’t be broken down into anything simpler. . Examples:. Carbon= C. Jennie L. Borders. Section 8.1 – Molecular Compounds. A . covalent bond. is formed between atoms held together by . sharing. electrons.. A . molecule. is a group of atoms joined by . covalent bonds. Jennie L. Borders. Warm-Up Feb. 24. What did Rutherford discover?. What charge does a neutron have?. How many electrons can the first energy level hold?. Section 4.1 – Studying Atoms. Democritus. believed that all matter consisted of extremely . Section . 2: Ionic and Covalent Bonding. Objectives. Why do atoms form bonds?. How do ionic bonds form?. What do atoms joined by covalent bonds share?. What gives metals their distinctive properties?. The structure of atoms dictate their properties. How atoms combine dictate what we see in the many . minerals. in nature. . New technologies allow us to peer ever closer at the minute structures of minerals, down to the scale of individual atoms.. Chapter 17- How Atoms Bond and Molecules Attract The Big Idea: Atoms and molecules are sticky 17.1 Electron-Dot Structures Valence electrons= electrons in outermost shell Electron- dot structures: a series of dots surrounding an atomic symbol 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. Atoms are neutral. Protons = Electrons. There are special kinds of atoms..... Ions. Isotopes. Ions. An Ion is an atom that has gained or lost ELECTRONS, so it has an overall charge. If an atom gains electrons, it’s overall charge becomes negative. If an atom loses electrons, it’s overall charge becomes positive. . Jennie L. Borders. Section 8.1 – Chemical Bonds, Lewis Symbols, and the Octet Rule. Whenever two atoms or ions are strongly attached to each other, we say there is a chemical bond between them.. There are three general types of chemical bonds: ionic, covalent, and metallic.. DE Chemistry. Dr. Walker. Timeline. B.C.. 400 B.C. . Demokritos. and . Leucippos. . use the term ". atomos. ” . 1500's. Georg Bauer: systematic metallurgy. Paracelsus: medicinal application of minerals. The Covalent Bond. Section 9.1. Worldwide, scientists are studying ways to increase food supplies, reduce pollution, and prevent disease. Understanding the chemistry of compounds that make up fertilizers, pollutants, and materials that carry genetic information is essential in developing new technologies in these areas. An understanding of the chemistry of compounds requires an understanding of their bonding..