Question 1 Which of the following properties of the halogens increase from F to I? I. Atomic radius II. Melting point III. Electronegativity Answer: B.
Ch 2. Atoms and Elements Atom Nucleus (Rutherford’s experiment) Electrons (Thomson’s experiment)
3-3: Counting Atoms Beaker Breaker 1.What was the name of Rutherford’s experiment? 2.What did Rutherford’s experiment discover? 3.My atomic number is.
Atoms and Elements. Structure of an Atom Charges Electron – negative Proton – positive Neutron - neutral Location in Atom Electrons – in orbits Protons.
Matter and Atomic Structure Chap. 3 What are elements? How atoms combine States of matter States of matter.
Unit 2 Atomic Number, Mass Number and Isotopes. Homework Complete worksheet 4A Read Pages 29-31 Chapter 2 problems: 8, 10, 14,16 Test scheduled.
Unit: The Atom and The Periodic Table. Evolution of the Structure of an Atom.
Chemistry 101 Answers. 1. What makes the properties of atoms (and elements) different from one another?
Study for the quiz! 1. What did Rutherford show with his Gold Foil Experiment? 2. What is the name of Group 7/17? 3. What reacts with the Noble Gasses?
The Genesis of the Elements Saliya Ratnayaka For Chem 510 October 22,2004.
Nuclear / Subatomic Physics Physics – Chapter 25 (Holt)
1 Announcements & Agenda (01/22/07) You should currently be reading Ch 4! Quiz on Wednesday over Ch 3! Today: Radiation (Ch 9 – only responsible for notes)