Chemical Formula <ul><li>Each element has a different symbol </li></ul><ul><li>The formula for a compound shows the elemen...
The Periodic Table The Periodic Table
Chemical Formula Chemical Formula
Atomic Structure Atomic Structure
Electron shells Electron shells
Electron shells Electron shells
Word equations <ul><li>Word equations use the names of the reactants and products to describe a reaction </li></ul>Word eq...
Word equations Word equations
Chemical equations <ul><li>Chemical equations use the chemical formulae of the reactants and products to describe a reacti...
Balancing equations Balancing equations
Relative atomic masses <ul><li>Atoms of different elements have different masses </li></ul><ul><li>The relative atomic mas...
Relative atomic masses Relative atomic mass
Relative formula mass <ul><li>The relative formula mass ( M r ) is the relative mass of a molecule compared to the mass of...
Relative formula mass Relative formula mass
Equation calculations <ul><li>The unknown mass of a reactant or product can be worked out by using the known masses of the...
Calculations from equations Calculations from Equations
Calculations from equations Calculations from Equations
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Equations

  1. 1. Chemical Formula <ul><li>Each element has a different symbol </li></ul><ul><li>The formula for a compound shows the elements in the compound </li></ul><ul><li>It also shows the ratio of the atoms of different elements in the compound </li></ul>Chemical Formula
  2. 2. The Periodic Table The Periodic Table
  3. 3. Chemical Formula Chemical Formula
  4. 4. Atomic Structure Atomic Structure
  5. 5. Electron shells Electron shells
  6. 6. Electron shells Electron shells
  7. 7. Word equations <ul><li>Word equations use the names of the reactants and products to describe a reaction </li></ul>Word equations
  8. 8. Word equations Word equations
  9. 9. Chemical equations <ul><li>Chemical equations use the chemical formulae of the reactants and products to describe a reaction </li></ul><ul><li>The total mass of the product(s) of a chemical reaction must equal the total mass of the reactant(s) </li></ul><ul><li>Therefore chemical equations must be balanced </li></ul><ul><li>The total number of atoms of one element should be the same on both sides of the equation </li></ul>Chemical equations
  10. 10. Balancing equations Balancing equations
  11. 11. Relative atomic masses <ul><li>Atoms of different elements have different masses </li></ul><ul><li>The relative atomic mass ( A r ) is the mass of the elements compared to the mass of a hydrogen atom </li></ul>Relative atomic masses
  12. 12. Relative atomic masses Relative atomic mass
  13. 13. Relative formula mass <ul><li>The relative formula mass ( M r ) is the relative mass of a molecule compared to the mass of a hydrogen atom </li></ul>Relative Formula Mass
  14. 14. Relative formula mass Relative formula mass
  15. 15. Equation calculations <ul><li>The unknown mass of a reactant or product can be worked out by using the known masses of the other reactants and products </li></ul>Equation calculations
  16. 16. Calculations from equations Calculations from Equations
  17. 17. Calculations from equations Calculations from Equations

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