Unit 3: Atomic Structure and the Periodic Table (Periodic Table Families…
Unit 3: Atomic Structure and the Periodic Table
Described the electron, the charge of an electron and its behavior.
determined the magnitude of the charge on a single electron, and calculated the mass of the electron.
Gold foil experiment, determined that the atom is mostly empty space
Described the number of particles in a substance.
The Atoms ability to attract and bind with electrons
Is the energy requireddd to remove an electron from a neutral atom to its gaseous phase at room temperature .
Is the ability of an atom to accept an electron
Is one half the distance between the nuclei of the two atoms( just like radius is half the diameter of a circle)>
Components of the Atom
Has a positive charge.
Has a negative charge,
Has no charge
Periodic Table Families (Physical and Chemical Properties)
Low melting boiling point, they are soft and can be easily cut with a knife, they have low densities, they react quickly with water. Chemical: Rubidium and Calcium
Alkali Earth Metals
Shiny, silvery white, somewhat reactive metals at standard temperature and pressure, low density's , low melting boiling points.