Relative atomic mass

• Reaction information


  Shown using word and symbol equations
• Mass is conserved in chemical reactions
• No atoms are made or destroyed in chemical reactions
• Relative atomic mass


  Mass of an element compared to the mass of atoms of other elements
• Relative formula mass


  Calculated by adding together the relative atomic masses of the atoms present in the compound
• Finding relative formula mass


  Add together the relative atomic mass values for all the atoms in the formula
• Relative formula mass in grams is called one mole of that substance
• Relative atomic mass values

  • Hydrogen (H) = 1
  • Oxygen (O) = 16
  • Sodium (Na) = 23
  • Magnesium (Mg) = 24