Mystery Powder Lab

by Liz LaRosa

www.middleschoolscience.com

 

Student Worksheet | Laminated Test Mat | Teacher Sheet | flow chart | flowchart (pdf) | Student WorkSheet (PDF) | Test Mat (PDF)

 

Updated Version for 2010 and use with Interactive Notebooks:  Mystery Powder Lab , Flow Chart

 

Objectives:

 

 Procedure:

 

DO NOT TASTE ANY POWDERS ! ! !

Physical properties & pH box :

Biuret test box :

Iodine test box:

Vinegar test box :

Data : 

 

Table 1 : Results of Tests on Powders (whole page)

Test

A

B

C

D

E

Color

 

 

 

 

 

 

 

 

Texture

 

 

 

 

 

 

Crystal / Powder

 

 

 

 

 

 

Litmus Paper 

 

 

 

 

Cabbage Juice          
Acid/Neutral/Base          

Biuret

 

 

Iodine

 

 

Vinegar

 

 

 

 

Analysis & Results :

  1. What did all of the powders have in common?

  2. Why is important to use different methods to determine what powder it is?

  3. Use the flow chart to see what powders you had!

  4. Give some common foods that each mystery powder can be found in.

  5. How might these tests be useful to you?

Conclusion:

2-3 sentences on what you learned