1 / 56

Mentos Video

SPS2d. Demonstrate the Law of Conservation of Matter in a chemical reaction. SPS2e. Apply the Law of Conservation of Matter by balancing the following types of chemical equations: Decomposition Synthesis Single Replacement Double Replacement. Mentos Video.

emercado
Télécharger la présentation

Mentos Video

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SPS2d. Demonstrate the Law of Conservation of Matter in a chemical reaction.SPS2e. Apply the Law of Conservation of Matter by balancing the following types of chemical equations:DecompositionSynthesisSingle ReplacementDouble Replacement

  2. Mentos Video • http://www.youtube.com/watch?v=hKoB0MHVBvM

  3. Chemical Reaction The recombination of atoms in one substance to form a new substance VIDEO

  4. Evidence of a chemical reaction: • Gas is released • Temperature change Exothermic – heat released Endothermic – heat is absorbed • Color change • Precipitate is formed

  5. RE-CALL what you remember from earlier this year. Evidence of a Chemical Reaction Precipitate is Formed Gas is Released Temperature Change Color Change

  6. 3 parts of chemical reaction: YEILD REACTANTS PRODUCT FLASH CARD and Three Different Colored Markers

  7. 1. Reactants – substances you start with

  8. 2. Yield

  9. 3. Products – substance you end with

  10. HOMEWORK – Due Wednesday • Finish the worksheet on labeling the parts of a reaction. • Products • Reactants • Yeild QUIZ WEDNESDAY! Over this topic…..

  11. Get Clickers! • Clear off desks

  12. Get Homework Sheet Out!

  13. Quiz A = Products B= Reactants • Enter 1 to 5 • 6. Sodium nitrate • 7. Silver Nitrate • 8. Sodium Chloride • 9. Silver chloride • 10. Zinc Sulfate • 11. Zinc • 12. Iron • 13. Iron Sulfate

  14. SPS2d. Demonstrate the Law ofConservation of Matter in a chemical reactionEQ: How does the Law of Conservation of Matter apply to balancing equations?

  15. 4HCl + MnO2  MnCl2 + 2H20 + Cl2

  16. Color Code Parts of Equation3 colors 3H2O 3 = Coefficient (can change) HO = Elements 2 = Subscript (can NOT change)

  17. Chemical Equation • Short hand way to describe a chemical reaction • Uses chemical symbols and numbers to show the reaction

  18. Examples: Na + Cl --> NaCl 2NaCl + 2H2SO4 + MnO2--> Na2SO4 + MnSO4 + 2H2O + Cl2 NaCl + H2O <--> H2O + Na+1 + Cl-1

  19. Parts of a Chemical Equation • Reactants – to the left of arrow • Products – to the right of arrow • Yield – is the arrow • (s) - solid • (l) - liquid • (g) - gas • (aq) – aqueous solution, reacts with H20

  20. TOD • WRITING CHEMICAL EQUATIONS • Complete BOTH sides of the worksheet • REMINDER • QUIZ tomorrow on labeling all the parts of a chemical equation Oxygen +

  21. Activator • The parts of a chemical reaction QUIZ. • Clear off desk • Keep out PEN or PENCIL only

  22. Can you figure out the total numberof each element? • (NH4)2so4

  23. 2HgO --> 2Hg + O

  24. 3CaCl2 • Put a star next to the subscript • Circle the coefficient • Subscript • Multiplies only the atom it is attached to • Coefficient • Multipiles everything after it

  25. Pointers for balancing equations: • Never change subscripts when balancing equations • Always double check – changing one may change something you thought was already balanced http://education.jlab.org/elementbalancing/cookie_error.html

  26. Balancing Chemical Equations: • Law of Conservation • Must have same kinds/numbers of atoms on both sides of the equation

  27. Are these balanced? If NOT Balance them….. H2 + O2            H2O (NH4)2CO3 ---> NH3 + CO2 + H2O

  28. NaCl is a compound and happily married ….Coefficient goes in FRONT not between, effecting both! Na + Cl are two different elements NOT happily married ….. Coefficient goes in front of either or both only, the PLUS sign separates them. Reminder

  29. Steps to Balancing a Chemical Equation

  30. IN GET OUT SOME PAPER….TO BE SUCCESFUL YOU MUST BE ORGANIZED AND MAKE A CHART TO DOUBLE CHECK YOUR WORK!

  31. Num. 1 N2 + H2  NH3

  32. Num. 2 KClO3  KCl + O2

  33. Num. 5 Pb(OH)2 + HCl  H2O + PbCl2

  34. Num. 6 AlBr3 + K2SO4  KBr + Al2(SO4)3

  35. TOD 2. H2 + O2 ----> H2O 1. Cu + O2 ----> Cu2O 3. Mg + P4 ---> Mg3P2 4. H2SO4 + NaOH ----> H2O + Na2SO4 5. CaCl2 + AgNO3 ----> AgCl + Ca(NO3)2 Don’t forget WOD tomorrow!

  36. http://video.about.com/chemistry/How-to-Balance-Chemistry-Equations.htmhttp://video.about.com/chemistry/How-to-Balance-Chemistry-Equations.htm • How does the Law of Conservation of Mass/Matter apply to balancing chemical equations?

  37. PRACTICE • 10. • 15.

  38. QUIZ Time! • Complete 1 to 10

  39. Have Your Homework OutWith Your Name Ready To Turn In • Achieve3000 • BURNING WOOD: BAD FOR THE PLANET • Complete: • All Summaries • Activity • Thought Question

  40. Take out homework!

  41. Think about this! • What happens to the amount of matter in this reaction?

  42. What is the Law of Conservation of Matter?

  43. Law of Conservation of Matter • States that matter can not be created or destroyed. • What you start with in a reaction is still the same after the reaction just redistributed

  44. CH3COOH + NaHCO3 -> H2O + NaOCOCH3 + CO2 LAB TIME! http://www.youtube.com/watch?v=5o-UjU8l_3M&feature=related

  45. More Balancing Practice

  46. Clear off desks!FOLDABLE DAY

  47. GET CLICKERS! • ANYONE NEED TO TURN IN HOMEWORK…..Have it out. • PROGRESS REPORTS due Friday.

  48. 4 Types of Chemical Reactions • Synthesis • Decomposition • Single Replacement • Double Replacement

  49. Synthesis • Simple compounds put together to make complex ones • A + B  AB • 2H2 + O2  2H2O

More Related