Atomic Theory Day 1

Atomic TheoryRead and Answer questions on pages 283

and 286

Make a timeline with the following scientists:DemocritusJohn DaltonJ. J. ThomsonErnest RutherfordNiels Bohr

Underneath each scientist, draw a picture of the atom they theorized

Atomic Theory Day 2

Democritus300 BC

Father of Modern Atomic Theory

Only his thoughts and ideas, no experiments

John DaltonLate 1700’s

Performed experiments

Determined atoms could combine

J. J. ThomsonLate 1800’s

Cathode Ray tube experiment showed that atoms have smaller parts with negative charge

Chocolate chip ice cream model

Ernest RutherfordEarly 1900’s

Gold Foil Experiment showed that atoms have a positively charged nucleus

Niels Bohrmid-1900’s

Most resembles current theory

Electrons in specific levels or rings around nucleus