PPT-Chapter 4: The Structure of the Atom

Atoms are the fundamental blocks of matter Chapter Big Idea Section 1 Early Ideas About Matter What are the similarities and differences of the atomic models of Democritus Aristotle and Dalton. Chemistry. Learning Goals . To be able to . explain and draw atomic structure. Elements. Elements are the . building blocks. of all . matter. on Earth. Elements are made up of . atoms. Differences in . Textbook Pages 4-5. Lesson Objectives. Appreciate that there are various models to illustrate atomic structure. Know that early models of atomic structure predicted that atoms and ions with noble gas electron arrangements should be stable. Malcolm, Xavier, Genna. Octet Rule. -Small molecules and polyatomic ions can use basic octet rule.. -Larger molecules, determine general arrangement of atoms, skeleton.. -Always includes central atom, atoms surrounding it bonded.. What are the 3 major parts of an atom?. Proton . Neutron . Electron. Parts of an Atom. Another Model. SIMPLIFIED MODEL.. PROTON. Protons are positively charged particles found in the atomic nucleus. . The lab technician shown here is using a magnifying lens to examine a bacterial culture in a petri dish. When scientists cannot see the details of what they study, they try to obtain experimental data that help fill in the picture.. Development of the Atom. The Hellenic Market. Fire Water Earth Air. ~. ~. The Greeks. History of the Atom. Not the history of atom, but the idea of the atom . In 400 B.C the Greeks tried to understand matter (chemicals) and broke them down into earth, wind, fire, and water.. 4.1 Early Theories of . Matter (& Early Chemistry – Alchemy and Related). 4.2 Subatomic Particles & Nuclear Atom. 4.2.5 Ultimate Structure of Matter – The Standard Model (Not in Book). Section 4.1 Early Ideas About Matter. 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 . Atom. An . atom. is the smallest particle of an . element. that retains the . chemical properties . of that . element. .. Atoms consist of . two. regions. The . nucleus. is at the . center. of the atom and contains at least one . The Atom Chapter 11 Section 2 What is an atom made of? Inside the Nucleus Atomic Mass Unit – unit of mass that describes the mass of an atom or molecule. Protons = POSITIVE charge (1 proton = 1amu.) Program for today:. - . Structures. . from. . p. rotein. X-. ray. . crystallography. - . Statistics. . of. . protein. . structures. - Statistical . potentials. 1. V10. Processing of Biological Data. Class: IX Subject: Chemistry Date -01/12/2020 Question 1. What are canal rays? Answer: Canal rays are positively charged radiations which led to the discovery of positively charged sub-atomic part Problem of Crystallography. What is . the problem?. How . was the problem solved?. In the context of a single crystal x-ray study. A Structure Query (What did I make?). Needed: A Single Crystal (0.2 mm). Rutherford proposed that most of the mass of the atom was concentrated. . at the atom’s center. . Rutherford’s Model of the Atom. Rutherford’s experiment suggested that an atom’s positive charge is concentrated in the center of the atom .