Atomic Structure

Objectives

• Describe Democritus' ideas about the atom
• Explain Dalton's theory
• Identify what instrument is used to observe individual atoms

Vocabulary: atom - Dalton's atomic theory

Objective

• Identify three types of subatomic particles
• Describe the structure of atoms according to the Rutherford atomic model

Vocabulary: electrons - cathode ray - protons - neutrons - nucleus

Objectives

• Explain what makes elements and isotopes different from one another
• Calculate the number of neutrons in an atom
• Calculate the atomic mass of an element
• Explain why chemists use the periodic table

Vocabulary: atomic number - mass number - atomic mass unit - atomic mass - periodic table - period - group

Khan Academy - Elements and Atoms

Khan Academy - Atoms, Protons, Neutrons, and Electrons

BBC Video - Atom: Clash of Titans

PhET Simulation - Build an Atom

PhET Simulation - Isotopes and Atomic Mass

Rutgers College Prep - The Atom pdf video

PBS Simulation - The Atom