2019 Year 12 IB Extended Essays

C ONTENTS P AGE

CONTENTS PAGE

1

INTRODUCTION

3

BACKGROUND RESEARCH Liesegang rings discovery

4 4

Chemical Oscillation

4

Liesegang rings

4 5 6

Existing Theories Spacing Laws

HYPOTHESIS

7

VARIABLES

7

Independent

7

Dependent

7 7

Controlled

MATERIALS AND APPARATUS

8

METHODOLOGY Safety considerations Method Extensions

9

10 10

Qualitative Analysis

11

DATA COLLECTION

12

Raw Data

12

Calculations

13

Processed Data 1

13

Example calculation 1

13

Error calculation for spacing coefficient

14

Processed Data

14

GRAPH 1:

15

1