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DOUBLE REPLACEMENT

DOUBLE REPLACEMENT. A LABORATORY EXAMINATION OF DOUBLE REPLACEMENT REACTION. SAFETY. GOGGLES HAIR TIED BACK APRONS. CHEMICAL THEORY. THERE ARE MANY TYPES DOUBLE REPLACEMENT REACTIONS, SUCH AS ACID-BASE NEUTRALIZATION AND PRECIPITATION. PRECIPITATE REACTIONS.

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DOUBLE REPLACEMENT

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  1. DOUBLE REPLACEMENT • A LABORATORY EXAMINATION OF DOUBLE REPLACEMENT REACTION

  2. SAFETY • GOGGLES • HAIR TIED BACK • APRONS

  3. CHEMICAL THEORY • THERE ARE MANY TYPES DOUBLE REPLACEMENT REACTIONS, SUCH AS ACID-BASE NEUTRALIZATION AND PRECIPITATION.

  4. PRECIPITATE REACTIONS • THESE ARE REACTIONS IN WHICH AN INSOLUBLE SOLID IS FORMED AND SETTLES OUT OF SOLUTION, THE PRECIPITATE.

  5. EXAMPLE/FORM EQUATION • AB + CD ----> AD + CB • THE CATIONS “TRADE” PLACES

  6. THE REACTION • WRITE THE BALANCED REACTION: • CaCl2(aq) + Na2CO3(aq) -----> 2NaCl(aq) + CaCO3(s)

  7. MATERIALS • RINGSTAND/WIRE TRIANGLE • FUNNEL • # 1 WHATMAN FILTER PAPER

  8. MATERIALS • ASSORTED BEAKERS • ASSORTED FLASKS • GLASS STIRRING ROD • DRYING OVEN

  9. REAGENTS • Na2CO3 SODIUM CARBONATE • CaCl2 CALCIUM CHLORIDE

  10. PROCEDURE • ADD 1 GRAM OF EACH “SALT” TO 20 mL OF WATER IN TWO SEPARATE BEAKERS AND DISSOLVE, THEN MIX SOLUTIONS IN COMMON BEAKER

  11. PROCEDURE CONTINUED • POUR THE CONTENTS OF THE BEAKER THROUGH THE FILTER PAPER FUNNEL ASSEMBLY

  12. MORE PROCEDURE • REMEMBER, PRE-MASS THE DRY FILTER PAPER BEFORE FILTERING

  13. DATA AND CONCLUSIONS • CONSTRUCT A DATA TABLE • DESCRIBE WHY THE LAB RESULTS OCCURRED IN CONCLUSION • CALCULATE THEORETICAL YIELD, THEN PERCENT YIELD AND PERCENT ERROR

  14. TECHNICAL WRITING PORTFOLIO • WRITING FOR A SPECIFIC PURPOSE • NO FLOWERY PROSE, GET TO THE POINT • MATH IS A LANGUAGE, CALCULATIONS ARE VITAL TO WRITEUP

  15. PURPOSE • WRITING TO INFORM, MAKE A DECISION OR LEARN HOW TO DO SOMETHING

  16. AUDIENCE • TARGET A SPECIFIC GROUP • OUR GROUP IS MIXED AUDIENCE, IF YOU CAN WRITE DIRECTIONS TO PUT A SWING SET TOGETHER YOU CAN WRITE ANYTHING

  17. ORGANIZATION • WE WILL FOLLOW THE PROBLEM, CAUSE, SOLUTION FORMAT • THIS LENDS ITSELF TO THE LABORATORY ORGANIZATION

  18. WRITING • CHOOSE THE DETAIL, AMOUNT OF DESCRIPITION • GRAPHICS ENHANCE THE IMPACT OF A PAPER

  19. COMPONENTS • TITLE. TO THE POINT, DESCRIPTIVE OF THE LAB. • INTRODUCTION. STATES CLEARLY THE QUESTION/PROBLEM AND WHY LAB WAS PERFORMED • EXPERIMENTAL DETAILS/RESULTS: EXPLAINS WHAT YOU DID AND WHY, AND LISTS RESULTS

  20. MORE COMPONENTS • CONCLUSIONS & DISCUSSION ANALYZE THE RESULTS AND EXPLAIN WHAT HAPPENED IN THE LAB • EXTENSIONS: “REAL WORLD” USES OF THIS REACTION AND LIME

  21. STILL MORE COMPONENTS • ACKNOWLEDGMENTS. LIST WHO CONTRIBUTED TO THE COMPLETION OF THE LAB • REFERENCES. LIST ANY TEXTS OR MATERIAL USED IN THE WRITING OF YOUR PAPER

  22. NUTS & BOLTS • PAPER IN BLUE OR BLACK INK OR WORD PROCESSED • FRONT OF PAPER ONLY • TITLE PAGE • DRAWINGS/ILLUSTRATIONS REQUIRED • GOALPOSTS, GOALPOSTS, GOALPOSTS

  23. This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.

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