3.1.5 Demonstrate the ability to work
cooperatively while respecting the ideas of
others and communicating one’s own conclusions
Chromatography - A technique used to separate the
components of a chemical mixture by moving the mixture
along a stationary material.
Soluble – capable of being dissolved or liquefied.
Solvent – a substance that can dissolve another substance.
Water is the most common solvent.
Definitions taken from the science dictionary portion of http://dictionary.reference.com/
Many scientists work together in teams. This way,
they can discover important things using the ideas
and viewpoints of many, rather than one.
The keys to “cooperative discovery” is to
communicate well and to listen and respect the
findings and thoughts of others.
Scientists often have results that vary, even when
they are performing the same experiment. Consider
this (and potential reasons for this) while
performing this experiment.
You will perform these steps with one to three
partners. Each student will do one of their own.
Take one of the round pieces of filter paper and
cut a small hole in the middle. The hole should be
about the size of the rolled up pieces of paper
towel – large enough to accommodate it; small
enough to hold the paper towel in place.
Use the black marker and draw dots, lines or some
simple pattern on the filter paper - each partner
can create their own design, but keep it simple.
Push one of the rolled up pieces of paper towel
through the hole in the filter paper.
Pour about an inch of water into the bottom of the
Place the filter paper at the top of the cup – the
rolled up paper towel should dip into the water.
Now, as you wait, discuss with your partner(s) what
you think will happen to your assembly. Note your
hypotheses on the next slide.
Hint: it will take about 10 to 15 minutes for results
to begin, so you have plenty of time to discuss.
What did the water do?
What happened to the black ink? Can you make
any observations about what makes up black
Does everybody’s experiment look the same?
Record your thoughts on the next slide.
Which entry best describes what happened in
A – My designs became bigger.
B – My designs separated into different colors.
C – The black ink ran onto the paper towel.
D – Nothing of interest happened.
What do you think would happen with different
color ink? Try it out.
Did you and your partners have different
designs? (lines, dots, etc.) Did the design or
shape make a difference?
Can you think of different ways of setting up
the experiment? (think materials, process, etc.)
A particular slide catching your eye?
Clipping is a handy way to collect important slides you want to go back to later.