Unit 8 of 10Gatekeeper unitGrade 11
Atoms and the Periodic Table
Work through these 6 topics in order. Clear the gatekeeper and the rest of the course opens up.
01
The structure of the atom
Early models through the Rutherford-Bohr nuclear atom.
Start here
02
Atomic number, mass and isotopes
Protons, neutrons, electrons, isotopes and average atomic mass.
Open ›
03
Electron configuration
Energy levels, orbitals and writing electron configurations.
Open ›
04
The periodic table and trends
Organizing the elements; trends in size, ionization energy and electronegativity.
Open ›
05
Chemical bonding and Lewis structures
Ionic, covalent and metallic bonding; drawing Lewis structures.
Open ›
06
Chemical families
Properties of the noble gases, alkali metals, alkaline earth metals and halogens.
Open ›