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Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a...

Date post: 17-Jan-2018
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Part I: Dilutions made with food coloring
24
Dilutions An Introduction
Transcript
Page 1: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Dilutions

An Introduction

Page 2: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Activity overview

• In this activity you will visualize what is meant by a ‘dilution’.

• You will also examine how to express the dilution that has been made.

Page 3: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Part I: Dilutions made with food coloring

Page 4: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 5: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 6: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 7: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 8: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 9: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

The intensity of the blue color decreases because, as weprogress through the tubes in the series, the concentrationof the blue food coloring in the tube decreases….

Let’s determine what dilutions of food coloring were madein each tube….

Page 10: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Determination of dilutions

Dilution #Volume blue f.c.

(mL)Total Volume

(mL)Dilution

(fraction)

1 5 10 5/10 =1/2

2 5 15 5/15 = 1/3

3 2 10 2/10 = 1/5

4 1 10 1/10

Page 11: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

The dilution made in each tube is expressedby the following ratio:

Volume of blue food coloring stockTotal volume of dilution*

*The total volume = Volume blue FC stock + Volume water

Page 12: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 13: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Part II: Dilution simulation with beads

Page 14: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Overview

In this part of the activity, you will visualize dilutionsby using colored beads as your red food coloring stock and clear beads as water.

You will also observe how the dilution made correlates with the concentration of the dilution…

Page 15: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Determination of the concentration of your red bead

stock…

• For your simulated red bead stock, concentration is defined as:

# red beadsvolume of red beads

Page 16: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 17: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 18: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 19: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 20: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Let’s determine what dilutions of red bead stock were madein each tube….

Page 21: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Determination of dilutions

Dilution #Vol red bead stock

(mL)Total Volume

(mL)Dilution

(fraction)

A 15 30 15/30 =1/2

B 5 25 5/25 = 1/5

Page 22: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.
Page 23: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

Determination of concentrations of dilutions A

and BThe concentration of each dilution can be determined by physically counting the number of red beads ineach tube. Concentration is simply:

# red beadsTotal dilution volume

Dilution # red beadsTotal volume of

dilution (mL)Concentration(red beads/mL)

A 1790 30 60B 620 25 25

Page 24: Dilutions An Introduction. Activity overview In this activity you will visualize what is meant by a ‘dilution’. You will also examine how to express the.

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