Recovering metal ions from solution by double-replacement reaction

Grade Level: High School Juniors and Seniors
Designed by Dave Vaultonburg a.k.a. Mr. V.

CHEMICAL REACTION TYPES

SINGLE REPLACEMENT......DOUBLE REPLACEMENT.....SYNTHESIS.....DECOMPOSITION.....COMBUSTION

Materials needed:	One computer per group, EXCEL, WORD & printer
	chemical reagents, pure water & glassware

Duration of Lesson:

2 blocks (3 1/2 hours)

SCAFFOLDING ACTIVITIES

Complete the following scaffolding activities to help with your chemical reaction knowledge and to demonstrate your computer software prowess........

For more information on reaction types, CHECK OUT this link.

Using , create your own version of the activity series of metals found in your textbook. Be creative.......use colors, fonts, pictures, etc. When you have finished the exercise, PRINT it, submit it for evaluation, and complete the next exercise.

Using , create your own version of the solubility table found in your textbook. Make it cool using different colors, fonts, pictures, etc. When you have completed the table, PRINT it and submit it for evaluation.

The tables you have just created will be used as references to determine the solubility of the compounds that result when the solutions you prepare during the lab exercise are combined.

STATEMENT OF PROBLEM:

PROCESS WATER FROM MANY INDUSTRIAL ACTIVITIES CONTAIN METALS IN SOLUTION. SOME METALS CAN BE REMOVED FROM THE WATER BY CHEMICAL REACTION WHILE OTHERS CANNOT.

WHAT'S NEXT?

YOUR GOAL IS TO PREPARE AND COMBINE CHEMICAL SOLUTIONS THAT WILL PRODUCE A PRECIPITATE THUS SIMULATING THE REMOVAL OF METAL IONS FROM INDUSTRIAL WATER. USING YOUR SOLUTION PREPARATION SKILLS, YOUR KNOWLEDGE OF DOUBLE-REPLACEMENT REACTIONS AND THE TABLES YOU PREPARED IN THE SCAFFOLDING ACTIVITIES, COMPLETE THE FOLLOWING LAB EXERCISE.

PREPARE SOLUTIONS USING THE FOLLOWING CHEMICAL REAGENTS THAT ARE LOCATED ON THE UTILITY CART BY THE LAB TABLES (Understanding):

NaOH		CaCl₂		Na₂CO₃
	(NH₄)₃PO4		AgNO₃		BaCl₂
CuCl₂		SrF₂		(NH₄)₂SO₄
	KNO₃		NaCl		Ca(C₂H₃O₂)₂

	2.	COMBINE PAIRS OF SOLUTIONS SUCH THAT A PRECIPITATE FORMS (SIGNIFYING A DOUBLE-REPLACEMENT REACTION HAS OCCURED) (Understanding).
	3.	ON A PIECE OF SCRATCH PAPER, RECORD THE FOLLOWING DATA (Understanding):
		* COLOR OF PRECIPITATE
		* NAME OF COMPOUND FORMED (Synthesis)
	4.	REPEAT STEP 2 TO FORM 3 DIFFERENT PRECIPITATES.
	5.	USING EXCEL OR WORD, CREATE AN ORIGINAL REPORT DETAILING WHICH REAGENT SOLUTIONS YOU COMBINED AND THE NAME OF THE RESULTING COMPOUNDS (PRECIPITATE) (Evaluation). IN YOUR REPORT, INCLUDE A FEW SENTENCES THAT REFLECT ON WHAT YOU LEARNED DURING THIS LESSON.

ASSESSMENT

	YOUR REPORT SHOULD CONTAIN:
	IN SOME FASHION, A LIST OF WHICH REAGENT SOLUTIONS YOU COMBINED.	20 PTS.
	THE NAME OF THE RESULTING COMPOUNDS (PRECIPITATES).	20 PTS.
	ANY OTHER OBSERVATIONS YOU MADE DURING THE LAB EXERCISE.
	YOU WILL ALSO BE GRADED ON PARTICIPATION	10 PTS.