Balancing Equations #1

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Balancing Equations #1

  1. 1. <ul><li>You Will Need: </li></ul><ul><ul><li>Log #5 (Update on-line) </li></ul></ul><ul><ul><li>Pencil, Text Book Periodic Table </li></ul></ul><ul><ul><li>4. Colored Pencils </li></ul></ul><ul><ul><li>Balancing Equations #1 </li></ul></ul><ul><ul><li>(Pick-up from bookshelf- Please Staple) </li></ul></ul>Today in Science
  2. 2. Remember <ul><ul><li>Test #4 Retakes this week. Please schedule a time with me. </li></ul></ul><ul><ul><li>Check your updated grades for accuracy or missing assignments. </li></ul></ul>
  3. 3. Balancing a chemical equations is much like the work of an accountant who has to show where every penny has come from and where it has gone to. Balancing Equations
  4. 4. Inhibitors Balancing Equations Catalysts Starts and/or Speeds Up Chemical Reactions Stops and/or Slows Down Chemical Reactions Vocabulary Word Definition
  5. 5. Balancing Equations Mass can neither be created or destroyed in any chemical reaction. Word Definition Conservation of Mass Reactants Products Coefficient
  6. 6. Balancing Equations 2 NaOH + H 2 SO 4 Na 2 SO 4 + 2 H 2 O Conservation of Mass = the same number of atoms of each element on each side of the equation.
  7. 7. Balancing Equations Mass can neither be created or destroyed in any chemical reaction. Substances going into the reaction. Word Definition Conservation of Mass Reactants Products Coefficient
  8. 8. Balancing Equations Reactants = the substances going into a reaction 2 NaOH + H 2 SO 4 Na 2 SO 4 + 2 H 2 O
  9. 9. Balancing Equations Mass can neither be created or destroyed in any chemical reaction. Substances going into the reaction. Substances produced by the reaction Word Definition Conservation of Mass Reactants Products Coefficient
  10. 10. Balancing Equations Products = the substances being produced by the reaction 2 NaOH + H 2 SO 4 Na 2 SO 4 + 2 H 2 O
  11. 11. Balancing Equations Mass can neither be created or destroyed in any chemical reaction. Substances going into the reaction. Substances produced by the reaction The number in front of the formula indicating how many molecules Word Definition Conservation of Mass Reactants Products Coefficient
  12. 12. Balancing Equations Coefficient = The number in front of each formula or element indicating how many molecules 2 NaOH + H 2 SO 4 Na 2 SO 4 + 2 H 2 O
  13. 13. Procedure <ul><li>Get Yourself an unbalanced equation. </li></ul><ul><li>NaOH + H 2 SO 4 Na 2 SO 4 + H 2 O </li></ul>
  14. 14. Procedure <ul><li>Get Yourself an unbalanced equation. </li></ul><ul><li>Draw boxes around all the chemical formulas . </li></ul>NaOH + H 2 SO 4 Na 2 SO 4 + H 2 O
  15. 15. Procedure <ul><li>Make an element inventory. </li></ul>NaOH + H 2 SO 4 Na 2 SO 4 + H 2 O Element Before After Na=Sodium 1 2 O= Oxygen 5 5 H= Hydrogen 3 2 S= Sulfur 1 1
  16. 16. Procedure <ul><li>Write the numbers in front of each of the boxes until the inventory for each element is the same both before and after the reaction . </li></ul>NaOH + H 2 SO 4 Na 2 SO 4 + H 2 O Element Before After Sodium 1 2 Oxygen 5 5 Hydrogen 3 2 Sulfur 1 1
  17. 17. Procedure <ul><li>Write the numbers in front of each of the boxes until the inventory for each element is the same both before and after the reaction . </li></ul>NaOH + H 2 SO 4 Na 2 SO 4 + H 2 O 2 2 6 4 Element Before After Na 1 2 O 5 5 H 3 2 S 1 1
  18. 18. Procedure <ul><li>Write the numbers in front of each of the boxes until the inventory for each element is the same both before and after the reaction . </li></ul>NaOH + H 2 SO 4 Na 2 SO 4 + H 2 O 2 Element Before After Na 2 2 O 6 5 H 4 2 S 1 1
  19. 19. Procedure <ul><li>Write the numbers in front of each of the boxes until the inventory for each element is the same both before and after the reaction . </li></ul>NaOH + H 2 SO 4 Na 2 SO 4 + H 2 O 2 2 6 4 Element Before After Na 2 2 O 6 5 H 4 2 S 1 1
  20. 20. Practice <ul><li>You have 5 problems to balance. </li></ul><ul><li>Show Your Final Inventory Chart on the Back. </li></ul><ul><li>Do TWO and get them checked before you complete the page. </li></ul>
  21. 21. Remember HOMEWORK : Complete “ Balancing Equations #1 ””- Due Tomorrow Part 1

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