Lifelong Learning Programme

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Experiences

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TEACHERS EXPERIENCES FORM

Title of the Experience
Determination PH vinegar
Name of the teacher
Antonio Puig López
Country where it took place
Spain
School typology
High Secondary School
Thematic Area
Chemistry
Experience typology
Laboratory
Type of contact
Direct
Description of the Experience
Is sought various market vinegar samples and measure pH and its content of acetic acid , both of commercial vinegar that can be obtained in most supermarkets as craftsmanship . In this lab is to determine the pH using the cabbage soup as natural indicator and depending on the values ​​obtained results are discussed and conclusions are drawn about the different types of vinegars.

Comments on this Teachers Experience

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Date: 2014.10.16

Posted by Silviana Ivanova (Bulgaria)

It is a very good practice. I did not think of this possibility. I always use different examples for determining PH.

Date: 2014.09.30

Posted by Chiara Cheti (Italy)

This experience is relevant because it allows to easily face a topic of Chemistry which is more complex if faced with formulas and calculations. Following the current experience, the use of formulas and calculations comes only after the initial experimental approach that makes the students aware about the usefulness of the subject to understand the world around them. Moreover, the proposed laboratorial activity fosters the students’ interest towards the studied topics and intrigue the students with their direct involvement.

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