DOUBLE REPLACEMENT

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DOUBLE REPLACEMENT

• A LABORATORY EXAMINATION OF DOUBLE REPLACEMENT
  REACTION

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SAFETY

• GOGGLES
• HAIR TIED BACK
• APRONS

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CHEMICAL THEORY

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

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PRECIPITATE REACTIONS

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

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EXAMPLE/FORM EQUATION

• AB CD ----gt AD CB
• THE CATIONS TRADE PLACES

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THE REACTION

• WRITE THE BALANCED REACTION
• CaCl2(aq) Na2CO3(aq) -----gt 2NaCl(aq) CaCO3(s)

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MATERIALS

• RINGSTAND/WIRE TRIANGLE
• FUNNEL
• 1 WHATMAN FILTER PAPER

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MATERIALS

• ASSORTED BEAKERS
• ASSORTED FLASKS
• GLASS STIRRING ROD
• DRYING OVEN

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REAGENTS

• Na2CO3 SODIUM CARBONATE
• CaCl2 CALCIUM CHLORIDE

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PROCEDURE

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

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PROCEDURE CONTINUED

• POUR THE CONTENTS OF THE BEAKER THROUGH THE
  FILTER PAPER FUNNEL ASSEMBLY

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MORE PROCEDURE

• REMEMBER, PRE-MASS THE DRY FILTER PAPER BEFORE
  FILTERING

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DATA AND CONCLUSIONS

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

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TECHNICAL WRITING PORTFOLIO

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

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PURPOSE

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

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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

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ORGANIZATION

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

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WRITING

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

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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

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MORE COMPONENTS

• CONCLUSIONS DISCUSSION ANALYZE THE RESULTS AND
  EXPLAIN WHAT HAPPENED IN THE LAB
• EXTENSIONS REAL WORLD USES OF THIS REACTION
  AND LIME

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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

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NUTS BOLTS

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

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