# Absorbency Lab

## What You Will Need to Know Before the Lab

• One will need to know about percentages, for example 1/10 is 10%
• One will need to know how to read a chart
• One will need to know how to use Logger Pro

## Materrials Needed for Lab

• Computer
• Colorimeter
• Containers of water and dye (0%, 10%, 20%, 30%, 40%, 50%, and one at a random percentage)
• Cubettes
• Bulb Syringe

## How to Make a Balanced Solution (10%)

In order to make one container of solution one will need to add 10 mL of total liquid. Of these 10 mL 10% will need to be dye, while 90% will be water. In order to measure this out you can take the original percentages and simplify them down by dividing each number by 10.

10/10=1

90/10=9

Meaning there is 9mL of water and 1 mL of dye.

## How to Read the Graph

A lower percentage of dye has a lower the amount of absorbance. This is due to the fact that there is not as much particles of dye to spread evenly into the water. According to the graphs above 10% dye had less absorbency then 30%.

## DId She Live?

Unfortunately Aunt Elda died due to drug overdose. The concentration of the medication was too high for her frail body. If you look on the graphs above, the one mark that is above the best fit line was poor Aunt Elda's Vaccine.

## Slow Motion Water and Dye Diffusion

Slow Motion - Red Food Coloring in Water at 420fps