UNESCO - United Nations Educational, Scientific and Cultural Organization IUPAC - International Union of Pure and Applied Chemistry

Partners for the International Year of Chemistry 2011

LATEST MEMBER

Alison Jordan

WANT TO BE A MEMBER?
(2358 MEMBERS)
General Information General Information
IYC2011 Global Partners

Dow - Sticky Sized

EPCA sticky size

Blog Blog

This bolg is for you to share your experiences. Please tell us everything about what you think of the International Year of Chemistry, and how your experiments went.
You need to be logged in and your school needs to be registered for you to write in this blog.

Blogs Blogs
Blogs »
Thank you !!!

 

                    We,   The Center for Ecological-Noosphere Studies of National Academy of Sciences of Republic of Armenia, have pledged to conduct as many projects as possible. One of them is to participate in the International Year of Chemistry 2011.

             And we were ready to be involved ourselves in many projects that emphasize the importance of Chemistry and ecological education. And here we are with our project results. The project  was coordinated by me Lilit Grigoryan.

            Introduction:

           pH is a unit of measure which describes the degree of acidity or alkalinity of a solution. It is measured on a scale of 0 to 14. The term pH is derived from "p", the mathematical symbol of the negative logarithm, and "H", the chemical symbol of Hydrogen. The formal definition of pH is the negative logarithm of the Hydrogen ion activity. pH is an important indicator of water quality.

Purpose:

To importance the chemistry for students, especially in giving priority to water. To determine the pH level of water in various type of water.

Discussion:

     Students from five schools from different regions of Armenia participated in the Global Experiment which is an International one.

     More than 400 students (V, VI, VII & VIII classes, 10-14 age) along with 20 teachers were involved in this project and actively participated in the pH of the Planet activity. Students were very animated for the experiment.

 Preparing:

 ·    Students were involved in all stages of experiment. They collected all information on water, water quality parameters themselfs, made a presentation. They sampled river and tap water, after which measured and assessed the level of pH by experiment.

       ·  To find the pH color, students were using Bromothymol Blue and m-Cresol Purple and a color chart provided by the IYC 2011 Global Experiment.

 

Results:

pH of the Planet Activity  - Water-Armenia.

Results

location

Type of  Water Source

Temperature (0C)

pH value

Yerevan c.

Tap

12,9

7,7

Griboedov v.

Channel

16

7,2

 Masis v.

Azat River

15

7,4

 Tavush v.

Tap

10

7,6

Qajaran c.

Voghji River

17

7,8

 

 Conclusion:

We are very glad that we could participate on this Global Experiment. It was very interesting. Students voluntarily came and clarified their doubts regarding pH. We conducted three experiments: pH of the Planet, No Dirt, No Germs. The bromothymol blue and m-Cresol purple were new indicators for our students; they have not worked with it yet. They have learned to determinate pH value to decimals by using color scale.

                          

 

 

 


  • Comments
Trackback URL:

BASFCEFICEvonikLoreal - For Women In ScienceSolvay