Chapter 3
Subject:
Chemistry [1]
Tags:
Chemistry [2]
ions [3]
Periodic Table [4]
Chemical bonding [5]
Chemical bond [7]
Chemical formula [8]
Hydrogen [9]
Fluorine [11]
Hydride [12]
molecule [13]
Technology [14]
behavior [15]
Human development [16]
Love [18]
Psychoanalysis [19]
Human behavior [20]
Attachment theory [21]
Evolutionary biology [22]
Personal life [23]
Chemistry 1210: General Chemistry Dr. Gina M. Florio 06 September 2012 Lecture Notes Jespersen, Brady, Hyslop, CH 3 Elements, Compounds, and the Periodic Table Structure of the Atom Atom consists of smaller (subatomic) particles: Protons (positively charged) Neutrons (no charge) Electrons (negatively charged) Found in the atomic nucleus e ?1 0 Electrons H+ 1 1 p 1 1 , Protons and n 0 1 Neutrons Matter is typically neutral ? equal number protons and electrons per atom Size: If diameter of nucleus = 1 foot, then diameter of atom ~ 1.9 miles! Ch. 3.1 2 Chapter 1.6 Identification of Atoms Each atom has two ID numbers: 1. Atomic Number (Z) Z = Number of protons Element ? a substance whose atoms contain the same number of protons ? a substance with a unique atomic number, Z Isotope