Today we had a chemistry lessons with Mrs. Metka Lampret who is our chemistry teacher. We were proving how much hard metals contain our food. We noticed that in different areas in Slovenia are different quantites of these hard metals. We proved that in potatoes is very high concentration of Pb, Zn and Cd. The important information is that only Zn is necessary for our body and that Pb and Cd aren’t good for our health.
