Red Dye Filtration
Red Dye Filtration
Red Dye Filtration
Scenario: Student takes qualitative measurements/observations of water before and after introducing food coloring. Has three stages of intensity (light concentration, medium concentration, larger concentration). Activated Charcoal (Processed Charcoal) can be used to filter out the coloring (Displaying Contaminants). (TEST FOOD COLORING FOR TDS, THEN USE SAND)Red Dye Filtration Multiple Choice Questions:
Q1: How does adding red dye to the tank when it is filled with water impact the total dissolved solids (TDS)?
INCREASE
The TDS increases. Adding a little bit of red dye to the tank of water increases the total dissolved solids accordingly in a way that directly scales to the amount added.
ADD MORE DYE, PROCEED TO QUESTION 2.
DECREASE
The TDS increases. Adding a little bit of red dye to the tank of water increases the total dissolved solids accordingly in a way that directly scales to the amount added.
ADD MORE DYE, PROCEED TO QUESTION 2.
TEMPORARY INCREASE & DECREASE
The TDS increases. Adding a little bit of red dye to the tank of water increases the total dissolved solids accordingly in a way that directly scales to the amount added.
ADD MORE DYE, PROCEED TO QUESTION 2.
NO DIFFERENCE
The TDS increases. Adding a little bit of red dye to the tank of water increases the total dissolved solids accordingly in a way that directly scales to the amount added.
ADD MORE DYE, PROCEED TO QUESTION 2.
Q2: How does adding red dye to the tank when it is filled with water impact the total dissolved solids (TDS)?
INCREASE
More dye added:
The TDS increases. Adding a moderate amount of dye in addition to the dye now settled in the mixture still increases the amount of dissolved solids in the water due to the water not yet reaching its maximum saturation.
ADD MORE DYE, PROCEED TO QUESTION 3.
DECREASE
More dye added:
The TDS increases. Adding a moderate amount of dye in addition to the dye now settled in the mixture still increases the amount of dissolved solids in the water due to the water not yet reaching its maximum saturation.
ADD MORE DYE, PROCEED TO QUESTION 3.
TEMPORARY INCREASE & DECREASE
More dye added:
The TDS increases. Adding a moderate amount of dye in addition to the dye now settled in the mixture still increases the amount of dissolved solids in the water due to the water not yet reaching its maximum saturation.
ADD MORE DYE, PROCEED TO QUESTION 3.
NO DIFFERENCE
More dye added:
The TDS increases. Adding a moderate amount of dye in addition to the dye now settled in the mixture still increases the amount of dissolved solids in the water due to the water not yet reaching its maximum saturation.
ADD MORE DYE, PROCEED TO QUESTION 3.
Q3: How does adding red dye to the tank when it is filled with water impact the total dissolved solids (TDS)?
INCREASE
More dye added:
There is a temporary increase before a decline to equilibrium. Adding a large amount of dye on the partially saturated mixture is eventually too much for the water to hold any more dye. As a result, the water temporarily increases in total dissolved solids before losing saturation when the water returns to its highest stable saturation level.
ADD CHARCOAL, PROCEED TO QUESTION 4.
DECREASE
More dye added:
There is a temporary increase before a decline to equilibrium. Adding a large amount of dye on the partially saturated mixture is eventually too much for the water to hold any more dye. As a result, the water temporarily increases in total dissolved solids before losing saturation when the water returns to its highest stable saturation level.
ADD CHARCOAL, PROCEED TO QUESTION 4.
TEMPORARY INCREASE & DECREASE
More dye added:
There is a temporary increase before a decline to equilibrium. Adding a large amount of dye on the partially saturated mixture is eventually too much for the water to hold any more dye. As a result, the water temporarily increases in total dissolved solids before losing saturation when the water returns to its highest stable saturation level.
ADD CHARCOAL, PROCEED TO QUESTION 4.
NO DIFFERENCE
More dye added:
There is a temporary increase before a decline to equilibrium. Adding a large amount of dye on the partially saturated mixture is eventually too much for the water to hold any more dye. As a result, the water temporarily increases in total dissolved solids before losing saturation when the water returns to its highest stable saturation level.
ADD CHARCOAL, PROCEED TO QUESTION 4.
Q4: How does adding red dye to the tank when it is filled with water impact the total dissolved solids (TDS)?
INCREASE
Adding charcoal to the highly saturated mixture temporarily increases the total dissolved solids in the water until the oversaturation forces some of the dissolved dye to be ejected and interact with the charcoal, where it then gets absorbed and effectively removed from the water. In essence, the charcoal served as a crude water filter.
See filtration results:
DECREASE
Adding charcoal to the highly saturated mixture temporarily increases the total dissolved solids in the water until the oversaturation forces some of the dissolved dye to be ejected and interact with the charcoal, where it then gets absorbed and effectively removed from the water. In essence, the charcoal served as a crude water filter.
See filtration results:
TEMPORARY INCREASE & DECREASE
Adding charcoal to the highly saturated mixture temporarily increases the total dissolved solids in the water until the oversaturation forces some of the dissolved dye to be ejected and interact with the charcoal, where it then gets absorbed and effectively removed from the water. In essence, the charcoal served as a crude water filter.
See filtration results:
NO DIFFERENCE
Adding charcoal to the highly saturated mixture temporarily increases the total dissolved solids in the water until the oversaturation forces some of the dissolved dye to be ejected and interact with the charcoal, where it then gets absorbed and effectively removed from the water. In essence, the charcoal served as a crude water filter.
See filtration results: