In today's class we conducted experiments that require long-term follow-up.:) First, we have the experience which is supposed to show the impact of sulfur dioxide on the color of flowers, after a finite experience, we had to wait about 15 minutes for it to draw conclusions from experience. . Flowers changed its color to white, and the paper indicator tinged with yellow to red, indicating that the acid formed, was created by niemetalu oxide and water.:))
next experience was the impact of oxides of nitrogen on germination and growth of garden cress, the course experience was as follows: cotton wool and dish wyścieliliśmy posialiśmy its rzeżuchę.Do We poured a pan of HNO3 and the solution to the second wodę.Szalki uszczelniliśmy zakryliśmy and Plasticine. Recent experience had us realize how pollutants affect the lives of Daphnia, the first beaker containing rearing daphnids dolaliśmy, a few drops of nitric acid (v), a salt of lead (II), shampoo and other włosów.Do dolaliśmy diluted soap solution added to the third saline Kitchens and spent on the fourth attempt kontrolną.Obserwację experience we will carry out the next few weeks.:)) The classes were very interesting and everyone with great enthusiasm he took part in the preparation of experiments. :))
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