Khan Academy
Naming monatomic ions and ionic compounds
Practice: Predict the charge on monatomic ions
Carbon monoxide (CO) is a covalent compound that can kill people.
Inorganic Chemistry Tutor – Atomic Orbitals Simply Explained! (5:55)
FloatHeadPhysics – I finally understood orbital shapes intuitively! (32:49)
Roman Numerals on Wikipedia: Roman numerals originated in ancient Rome, and were used in Europe until the late Middle Ages (1300-1500).
The Simpsons – Roman Numerals (0:30)
For larger numbers, the following symbols are used:
- X: 10
- L: 50
- C: 100
- D: 500
- M: 1,000
This means that the year 2000 is written as MM, and the year 1998 is written as MCMXCVIII.
Roman numerals were eventually replaced by the Arabic numerals (0 to 9) we use today. The Arabic numerals in turn are based on Hindu numerals. Note that in the 15th century, the character for 5 used to look like the current character for 4.
HisStory – The Myth of Roman Numerals (0:34)
Worksheets
Worksheet – Bohr Model Diagrams
Worksheet Solutions – Bohr Model Diagrams
Worksheet – Bohr Model Diagrams and Lewis Structures of Ions
Worksheet Solutions – Bohr Model Diagrams and Lewis Structures of Ions
Worksheet Solutions – Ionic Compounds
Worksheet – Naming Ionic Compounds
Worksheet Solutions – Naming Ionic Compounds
Assignment – Naming Ionic Compounds
Worksheet – Ionic Compounds with Multivalent Metals
Worksheet Solutions – Ionic Compounds with Multivalent Metals
Assignment – Dr. Percy Julian, Chemist
Assignment Solutions – Dr. Percy Julian, Chemist
Worksheet – Ionic Compounds with Polyatomic Ions
Worksheet Solutions – Ionic Compounds with Polyatomic Ions