1. Atomic Model Activity Venn Diagram

2. Atomic Model Research • Read the handout (Pages 179 to 185) • Make jot notes about the major discovery of each scientist: • John Dalton • J.J. Thompson • Ernest Rutherford • Neils Bohr • James Chadwick

3. Atomic Model Venn Diagram Dalton (1800s) Thompson (1897) 1 4 2 3 Rutherford (1898)

4. Atomic Model Concepts Place the following concepts where they belong in the diagram above • Atoms cannot be divided • Atoms can be divided into subatomic particles • Atoms contain a small positively charged nucleus • Atoms of the same element all have the same mass and size • Subatomic particles with negative charge are called electrons • Negative electrons revolve around the nucleus • Atoms of different elements have different mass and size • Atoms resemble a raisin bun • Atoms can link together • Nucleus is composed of protons and neutrons • His important discoveries were made in Canada • Atoms are small, hard, and indestructible • His discoveries were made by beaming particles at gold foil