ZIP LAB: NAME(S): _________________  ________________Period:__  DATE:_______ SCORE: ___20

 

MATERIALS & PROCEDURE: FOR ALL ZIP LABS: Tray, GOGGLES, thermometer, and a zip lock bag.

                       Record the results, and write the chemical equation.

ZIP! #1     MATERIALS: Water - (H+ OH-), sodium bicarbonate (Na HCO3).

PROCEDURE:

a. Place approx. 1 tablespoons of sodium bicarbonate in the zip lock bag.

b. add approx. 20 ml of water to the bag and quickly seal the bag with the zipper.

 

ZIP! #2     MATERIALS: water - (H+ OH-), sodium hydroxide - (Na OH).

PROCEDURE:

a. Place approx. 1 tablespoons of sodium hydroxide in a small plastic bag.
b. add approx. 10 ml of water to the bag and quickly seal the bag with the zipper.

 

ZIP!#3      MATERIALS: sodium bicarbonate (Na HCO3),  vinegar (CH3COOH - Acetic Acid).
 PROCEDURE:

  1. Place approx. 1 tablespoons of Sodium bicarbonate in a zip lock bag.
  2. add approx. 10-20 ml of vinegar to the bag and quickly seal the bag with the zipper.

Zip #

COMMENTS:

WATER TEMPERATURE BEFORE IN C

AFTER
MIXTURE TEMPERATURE IN C


TEMPERATURE DIFFERENCE IN C

1

 

 

 

2

 

 

 

3

Vinegar Temp*

 

 

 

1. Na HCO3           +          H OH          ====> ____________  + _________            endothermic/exothermic/no change

                                                                         Carbonic Acid      LYE

Sodium bicarbonate  +   water         ====> {(__DD____D_____SR_____S_____reaction)}                 ____Deg C

     (Baking soda)                                 

2. Na OH               +          H OH         ====> ____________  + _________              endothermic/exothermic/no change

                                                                            Lye                     water

 Sodium Hydroxide    +   water         ====> {(__DD____D_____SR_____S_____reaction)}                ____Deg C

 

For number three:
add approx. 10-20 ml of vinegar to the bag and quickly seal the bag with the zipper.

 

3. Na HCO3           +      CH3COOH   ====> ____________  + _________ + _____  endothermic/exothermic/no change

                                    Acetic Acid                Peroxyl Acid                         ( _____ ) 
     Sodium bicarbonate  + vinegar        ====> {(__DD____D_____SR_____S_____reaction)}                  ____Deg C             

Reaction Types:

 1. DOUBLE DECOMPOSITION:             A-B  +   C-D  ====>  A-D   +  B-C   

2. SINGLE REPLACEMENT:                 A     +    B-C  ====>  B      +   A-C

3. SYNTHESIS:                                     A      +     B      ====>  A-B
                                                            A      +     B-C  ====>  A-B-C                                                         
                                                            A-B   +    C-D  ====>  A-B-C-D

4. DECOMPOSITION:                            A-B           ====>   A       +  B

                                                            A-B-C       ====>   A       +  B-C
                                                            A-B-C-D   ====>   A-B    +  C-D