Messing With Mixtures Part A - The Science Spot (Page 2 of 3) in pdf

Messing With Mixtures Part A - The Science Spot Page 2

(8) Identify the solute(s) and solvent in each solution. Underline the solute and circle the solvents. Remember

that a SOLUTE dissolves in a SOLVENT!

Ocean water - Salt and water

Kool-Aid - Powder, sugar, and water

Antifreeze - Water and ethylene glycol

Lemonade - Water, lemon juice, and sugar

Soda Pop - Syrup, water, and CO

gas

Air - Nitrogen, oxygen, and other gases

Gold jewelry - Gold and copper

Sterling Silver - Silver and copper

(9) What liquid is called the “universal solvent”?

(10) Which would have the most SOLUTE: a glass of very sweet Kool-Aid or a glass of barely sweet

Kool-Aid? Give a reason for your answer.

Part C: Mystery Colors

(11) Follow the steps below to use chromatography to separate the pigments in black ink. You will need three

black markers, three pieces of filter paper, a piece of pipe cleaner, and a small beaker of water.

(A) Use one of the markers to draw a circle (about the size of a dime)

in the center of a piece filter paper.

(B) Insert one end of a pipe cleaner into the center of your ink dot.

Place the other end into the water in the beaker.

Pipe

Cleaner

separate the pigments in the ink.

(D) Repeat the first three steps to test the other markers.

Step A

Step B

(12) What happened to the black ink?

(13) What colors did you observe for each pen?

Pen 1 -

Pen 2 -

Pen 3 -

(14) Identify the solute and solvent for this experiment.

Solute = _______________________ Solvent = _______________________

(15) What do you think would happen if you used a permanent marker? Explain your answer.

Messing With Mixtures Part A - The Science Spot Page 2