Chapter 4

Learning targets


·       I can describe ancient Greek models of matter.

·       I can list the main points of Dalton’s atomic theory and describe his evidence for the existence of atoms.

·       I can explain how Thomson and Rutherford used data from experiments to produce their atomic models.



·       I can identify three subatomic particles and compare their properties.

·       I can distinguish the atomic number of an element form the mass number of an isotope, and use these numbers to describe the structure of atoms.



·       I can describe Bohr’s model of the atom and the evidence for energy levels.

·       I can explain how the electron cloud model represents the behavior and locations of electrons in atoms.

·       I can distinguish the ground state from excited states of an atom based on electron configurations.

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