Page 214 - PowerPoint Presentation
P. 214
UTICAJ ŢVAKAĆIH GUMA NA BRZINU PROMENE PH VREDNOSTI U USTIMA
Autor: Vuković Igor učenik VII razreda OŠ „Ruđer Bošković“
Profesor: Slaviša Stošić dipl. hemičar
Rezime
Pošto smo sa televizije stalno zatrpani reklamama o žvakadim gumama, odlučili smo da ispitamo njihov
uticaj na brzinu promene pH vrednosti u ustima. Primedeno je i da puno đaka nakon obroka koristi
žvakade gume. Učenici jednog odeljenja su bili deo eksperimenta gde je posle užine merena promena pH
vrednosti pomodu univerzalnog papira, i dokazano je da dolazi do promene, ali ne tako naglašeno kao što
se u reklamama predstavlja.
Ključne reči: žvakade gume, pH vrednost, promena, reklame
Summary
Since we are constantly cluttered with television commercials on chewing gums, we decided to examine
their impact on the rate of the change of pH value in the mouth. We've noticed that a lot of students
after the meal use chewing gum. After breakfast, with students of one class, we measured the pH change
with universal paper, and proved that there is a change, but not as stressed as in the commercials.
Key words: chewing gum, pH value, change, advertisement
