Production of Chalk from Eggshells

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Investigatory Project
Presented to the
Department of Science and Technology

By:
Coleen Sioson

October 2012

A. Experiment Description
In this investigatory project, we will use eggshells as an alternative ingredient in chalk production. The study is very efficient in these days because many people are in need of chalk especially the teachers because they use board chalks in school everyday.We noticed that the students and teachers consume many pieces of it, which is very expensive. So, we decided to make a chalk out of eggshells which is very affordable and can give an equal quality in the chalks that we buy in stores.

B. Statement of the problem
This study aims to discover the use of eggshells in producing chalk in terms of the chalks whiteness and writing capabilities.

C. Significance of the study
This study can give benefits to the community specially to the teachers, students and faculty members.This will help them to save money on buying commercial chalks because they can make their own chalks at home using materials that is easy to find and very cheap.This will also benefit to the people who are eating eggs daily because they can recycle the eggshells to make a chalk which they can use.

D. Hypothesis
Eggshells can be used as an alternative ingredient in chalk production because it has the same characteristics and components in commercial chalk production.

We use chalk in school everyday but the price of the chalk in stores are expensive so we decided to create an alternative board chalk made from eggshells which is cheaper and much easy to make. Planning

E. Methodology

Phase I

The chalk is a white porous sedimentary rock, a form of sedimentary rock composed of mineral calcite. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed belonging to the division of haptophytes. They function as a special calcium carbonate. Eggshell is another object that...
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