Classroom and educational resources to engage students ages 15–18 with the periodic table. Classroom and educational resources to engage students ages 15–18 with the periodic table. Skip to ... They ...

Many periodic tables include the atomic number (number of protons) and atomic weight (which depends on protons and neutrons). Sometimes they list the full name of each element, but often only include ...

VOICEOVER: Chemical symbols and formulas. Every element in the periodic table is represented by a unique chemical symbol, like O for Oxygen or Mg for Magnesium.Chemical formulas represent ...

It's hard to imagine today, but when scientists introduced the periodic table, it was merely a conjecture. ... but Mendeleev tended to trust his own instincts and formulas over mere evidence.

Look at the periodic table and find oxygen (O). The atomic number of oxygen is listed as 8. This means oxygen has 8 protons in its nucleus. Example 2: Sodium. Sodium is a metal commonly found in ...