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Cup and Saucer


OBJECTIVE

 

The purpose of this lab will be for you to identify indicators of a chemical reaction.  As, you work on each of these different chemical reactions look for something like: heat, color, or changes in state that may indicate a chemical reaction has taken place.

 

PRE-OBSERVATIONS

 

In this lab you will be working with the following chemical:

 

Iron Solution

Tea

Hydrogen Peroxide

Ammonia   NH3

Water   H2O

Alum

Baking Soda also know as Sodium Bicarbonate

Cream of Tartar also know as Sodium Bitartrate

Epsom Salt   MgSO4

 

To complete this lab you will first need to become familiar with what each of these chemicals are all about. This means how are they commonly used and found.  Several hints that will help you to know are: most of these chemicals are found commonly in kitchens, many of the chemicals are commonly used in cooking or preparing foods.  In your research about tea look into some of the common chemicals that go into making tea as it is a mixture.

 

PROCEDURE

 

Use the following tables to help you to complete the lab. Be sure and use the proper solution to complete each table. Quality observations are the key to success.

 

TEST ONE

A = 5ml of iron solution

B = 5ml of hydrogen peroxide

C = 5ml of ammonia

 

 

TEST TUBE

 

APPEARANCE AND OBSERVATIONS

 

A

 

 

B

 

 

C

 

 

A + B

 

 

C + A + B

 

 

 

TEST TWO

A = 10ml of iron solution

B = 10ml of tea

 

 

TEST TUBE

 

APPEARANCE AND OBSERVATIONS

 

A

 

 

B

 

 

A + B

 

 

 

Complete the rest of these reactions using one of the two charts above in the same sequence as shown in the charts.

 

TEST THREE

A = 10ml of water + 2 measures of sodium bicarbonate

B = 10ml of water + 2 measures of alum

 

 

TEST FOUR

A = 10ml of ammonia

B = 10ml of water + 2 measures of magnesium sulfate (Epsom salt)

 

TEST FIVE

A = 10 ml of ammonia

B = 10ml of water + 2 measures of alum

 

TEST SIX

A = 10ml of water + 2 measures of cream of tartar

B = 10ml of iron solution + 5ml of hydrogen peroxide

 

TEST SEVEN

A = 5ml of iron solution

B = 5ml of ammonia

C = 5ml of hydrogen peroxide