Separating Inks in Markers Using Chromotography (Paper Chromotography) - LAB

Separating Inks in Markers Using Chromotography (Paper Chromotography) - LAB
Separating Inks in Markers Using Chromotography (Paper Chromotography) - LAB
Separating Inks in Markers Using Chromotography (Paper Chromotography) - LAB
Separating Inks in Markers Using Chromotography (Paper Chromotography) - LAB
Grade Levels
Resource Type
Product Rating
4.0
1 rating
File Type

Word Document File

Be sure that you have an application to open this file type before downloading and/or purchasing.

29 KB
Share
Product Description
In this lab, for which a supplemental video is available, I walk through the process of taking 8 seemingly identical black water based markers, and through a process called chromotography, separate the inks in the markers into their individual chemicals, showing that they are indeed, NOT identical.

This process shown is an extremely basic example of the methods used by forensic scientists to identify substances found at crime scenes....without the million-dollar machines.

I've used the lab with great success in a 7th grade class. I have each group do one marker (random) in a beaker, then compare with another group, in order to draw conclusions.

The lab takes a while (just WAITING), so I typically work on other class content with the kids, stopping every 5 minutes or so, so they can make observations. The ink will rise up the paper for hours, but the lab portion can be cut off whenever needed, to fit your time frame.

If used with higher grade levels, you can easily get 4 chromotography strips into a 400mL beaker.

The materials you'll need include:
-Chromotography paper (either in roll, or strip format)
-My informal lab report (my store)
- (x) number of black, water-based markers
-a beaker for each group (I use 400mL beakers)
-string
-a paperclip per group
-tape
Total Pages
N/A
Answer Key
N/A
Teaching Duration
N/A
Report this Resource
Loading...
$2.00
Digital Download
More products from Feed Your Brain - With Science
Product Thumbnail
$0.00
Product Thumbnail
$0.00
Product Thumbnail
$0.00
Product Thumbnail
$0.00
Product Thumbnail
$0.00
$2.00
Digital Download
Teachers Pay Teachers

Teachers Pay Teachers is an online marketplace where teachers buy and sell original educational materials.

Learn More

Keep in Touch!

Sign up