Year 10 - Moles Calculations

Atoms:

• The number of protons in an atom of an element is it's atomic number
• The sum of the protons and neutrons in an atom is it's mass number
• All atoms of a particular element have the same number of protons
  • Atoms of different elements have different numbers of protons
• The Relative Atomic Mass of an element compares the mass of atoms of the element with the Carbon-12 isotope
  • It is the average value for isotopes of the element

Chemical Reactions and Related Calculations:

• The Relative Formula Mass of a compound is the sum of the relative atomic masses of the atoms - in the number quantities shown by the formula
  • This is known as 1…